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407 lines
No EOL
15 KiB
PHP
407 lines
No EOL
15 KiB
PHP
<?php
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/**
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* base include file for SimpleTest
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* @package SimpleTest
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* @subpackage UnitTester
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* @version $Id: dumper.php 1909 2009-07-29 15:58:11Z dgheath $
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*/
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/**
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* does type matter
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*/
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if (! defined('TYPE_MATTERS')) {
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define('TYPE_MATTERS', true);
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}
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/**
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* Displays variables as text and does diffs.
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* @package SimpleTest
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* @subpackage UnitTester
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*/
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class SimpleDumper {
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/**
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* Renders a variable in a shorter form than print_r().
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* @param mixed $value Variable to render as a string.
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* @return string Human readable string form.
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* @access public
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*/
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function describeValue($value) {
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$type = $this->getType($value);
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switch($type) {
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case "Null":
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return "NULL";
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case "Boolean":
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return "Boolean: " . ($value ? "true" : "false");
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case "Array":
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return "Array: " . count($value) . " items";
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case "Object":
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return "Object: of " . get_class($value);
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case "String":
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return "String: " . $this->clipString($value, 200);
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default:
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return "$type: $value";
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}
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return "Unknown";
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}
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/**
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* Gets the string representation of a type.
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* @param mixed $value Variable to check against.
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* @return string Type.
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* @access public
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*/
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function getType($value) {
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if (! isset($value)) {
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return "Null";
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} elseif (is_bool($value)) {
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return "Boolean";
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} elseif (is_string($value)) {
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return "String";
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} elseif (is_integer($value)) {
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return "Integer";
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} elseif (is_float($value)) {
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return "Float";
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} elseif (is_array($value)) {
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return "Array";
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} elseif (is_resource($value)) {
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return "Resource";
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} elseif (is_object($value)) {
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return "Object";
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}
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return "Unknown";
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}
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/**
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* Creates a human readable description of the
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* difference between two variables. Uses a
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* dynamic call.
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* @param mixed $first First variable.
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* @param mixed $second Value to compare with.
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* @param boolean $identical If true then type anomolies count.
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* @return string Description of difference.
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* @access public
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*/
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function describeDifference($first, $second, $identical = false) {
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if ($identical) {
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if (! $this->isTypeMatch($first, $second)) {
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return "with type mismatch as [" . $this->describeValue($first) .
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"] does not match [" . $this->describeValue($second) . "]";
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}
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}
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$type = $this->getType($first);
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if ($type == "Unknown") {
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return "with unknown type";
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}
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$method = 'describe' . $type . 'Difference';
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return $this->$method($first, $second, $identical);
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}
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/**
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* Tests to see if types match.
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* @param mixed $first First variable.
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* @param mixed $second Value to compare with.
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* @return boolean True if matches.
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* @access private
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*/
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protected function isTypeMatch($first, $second) {
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return ($this->getType($first) == $this->getType($second));
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}
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/**
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* Clips a string to a maximum length.
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* @param string $value String to truncate.
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* @param integer $size Minimum string size to show.
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* @param integer $position Centre of string section.
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* @return string Shortened version.
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* @access public
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*/
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function clipString($value, $size, $position = 0) {
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$length = strlen($value);
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if ($length <= $size) {
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return $value;
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}
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$position = min($position, $length);
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$start = ($size/2 > $position ? 0 : $position - $size/2);
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if ($start + $size > $length) {
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$start = $length - $size;
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}
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$value = substr($value, $start, $size);
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return ($start > 0 ? "..." : "") . $value . ($start + $size < $length ? "..." : "");
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}
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/**
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* Creates a human readable description of the
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* difference between two variables. The minimal
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* version.
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* @param null $first First value.
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* @param mixed $second Value to compare with.
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* @return string Human readable description.
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* @access private
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*/
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protected function describeGenericDifference($first, $second) {
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return "as [" . $this->describeValue($first) .
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"] does not match [" .
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$this->describeValue($second) . "]";
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}
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/**
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* Creates a human readable description of the
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* difference between a null and another variable.
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* @param null $first First null.
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* @param mixed $second Null to compare with.
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* @param boolean $identical If true then type anomolies count.
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* @return string Human readable description.
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* @access private
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*/
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protected function describeNullDifference($first, $second, $identical) {
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return $this->describeGenericDifference($first, $second);
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}
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/**
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* Creates a human readable description of the
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* difference between a boolean and another variable.
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* @param boolean $first First boolean.
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* @param mixed $second Boolean to compare with.
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* @param boolean $identical If true then type anomolies count.
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* @return string Human readable description.
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* @access private
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*/
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protected function describeBooleanDifference($first, $second, $identical) {
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return $this->describeGenericDifference($first, $second);
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}
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/**
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* Creates a human readable description of the
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* difference between a string and another variable.
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* @param string $first First string.
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* @param mixed $second String to compare with.
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* @param boolean $identical If true then type anomolies count.
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* @return string Human readable description.
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* @access private
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*/
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protected function describeStringDifference($first, $second, $identical) {
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if (is_object($second) || is_array($second)) {
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return $this->describeGenericDifference($first, $second);
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}
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$position = $this->stringDiffersAt($first, $second);
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$message = "at character $position";
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$message .= " with [" .
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$this->clipString($first, 200, $position) . "] and [" .
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$this->clipString($second, 200, $position) . "]";
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return $message;
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}
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/**
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* Creates a human readable description of the
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* difference between an integer and another variable.
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* @param integer $first First number.
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* @param mixed $second Number to compare with.
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* @param boolean $identical If true then type anomolies count.
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* @return string Human readable description.
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* @access private
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*/
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protected function describeIntegerDifference($first, $second, $identical) {
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if (is_object($second) || is_array($second)) {
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return $this->describeGenericDifference($first, $second);
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}
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return "because [" . $this->describeValue($first) .
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"] differs from [" .
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$this->describeValue($second) . "] by " .
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abs($first - $second);
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}
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/**
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* Creates a human readable description of the
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* difference between two floating point numbers.
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* @param float $first First float.
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* @param mixed $second Float to compare with.
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* @param boolean $identical If true then type anomolies count.
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* @return string Human readable description.
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* @access private
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*/
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protected function describeFloatDifference($first, $second, $identical) {
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if (is_object($second) || is_array($second)) {
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return $this->describeGenericDifference($first, $second);
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}
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return "because [" . $this->describeValue($first) .
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"] differs from [" .
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$this->describeValue($second) . "] by " .
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abs($first - $second);
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}
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/**
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* Creates a human readable description of the
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* difference between two arrays.
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* @param array $first First array.
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* @param mixed $second Array to compare with.
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* @param boolean $identical If true then type anomolies count.
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* @return string Human readable description.
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* @access private
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*/
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protected function describeArrayDifference($first, $second, $identical) {
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if (! is_array($second)) {
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return $this->describeGenericDifference($first, $second);
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}
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if (! $this->isMatchingKeys($first, $second, $identical)) {
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return "as key list [" .
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implode(", ", array_keys($first)) . "] does not match key list [" .
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implode(", ", array_keys($second)) . "]";
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}
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foreach (array_keys($first) as $key) {
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if ($identical && ($first[$key] === $second[$key])) {
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continue;
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}
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if (! $identical && ($first[$key] == $second[$key])) {
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continue;
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}
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return "with member [$key] " . $this->describeDifference(
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$first[$key],
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$second[$key],
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$identical);
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}
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return "";
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}
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/**
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* Compares two arrays to see if their key lists match.
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* For an identical match, the ordering and types of the keys
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* is significant.
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* @param array $first First array.
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* @param array $second Array to compare with.
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* @param boolean $identical If true then type anomolies count.
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* @return boolean True if matching.
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* @access private
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*/
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protected function isMatchingKeys($first, $second, $identical) {
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$first_keys = array_keys($first);
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$second_keys = array_keys($second);
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if ($identical) {
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return ($first_keys === $second_keys);
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}
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sort($first_keys);
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sort($second_keys);
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return ($first_keys == $second_keys);
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}
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/**
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* Creates a human readable description of the
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* difference between a resource and another variable.
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* @param resource $first First resource.
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* @param mixed $second Resource to compare with.
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* @param boolean $identical If true then type anomolies count.
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* @return string Human readable description.
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* @access private
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*/
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protected function describeResourceDifference($first, $second, $identical) {
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return $this->describeGenericDifference($first, $second);
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}
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/**
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* Creates a human readable description of the
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* difference between two objects.
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* @param object $first First object.
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* @param mixed $second Object to compare with.
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* @param boolean $identical If true then type anomolies count.
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* @return string Human readable description.
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*/
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protected function describeObjectDifference($first, $second, $identical) {
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if (! is_object($second)) {
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return $this->describeGenericDifference($first, $second);
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}
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return $this->describeArrayDifference(
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$this->getMembers($first),
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$this->getMembers($second),
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$identical);
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}
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/**
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* Get all members of an object including private and protected ones.
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* A safer form of casting to an array.
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* @param object $object Object to list members of,
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* including private ones.
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* @return array Names and values in the object.
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*/
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protected function getMembers($object) {
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$reflection = new ReflectionObject($object);
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$members = array();
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foreach ($reflection->getProperties() as $property) {
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if (method_exists($property, 'setAccessible')) {
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$property->setAccessible(true);
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}
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try {
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$members[$property->getName()] = $property->getValue($object);
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} catch (ReflectionException $e) {
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$members[$property->getName()] =
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$this->getPrivatePropertyNoMatterWhat($property->getName(), $object);
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}
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}
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return $members;
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}
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/**
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* Extracts a private member's value when reflection won't play ball.
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* @param string $name Property name.
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* @param object $object Object to read.
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* @return mixed Value of property.
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*/
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private function getPrivatePropertyNoMatterWhat($name, $object) {
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foreach ((array)$object as $mangled_name => $value) {
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if ($this->unmangle($mangled_name) == $name) {
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return $value;
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}
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}
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}
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/**
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* Removes crud from property name after it's been converted
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* to an array.
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* @param string $mangled Name from array cast.
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* @return string Cleaned up name.
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*/
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function unmangle($mangled) {
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$parts = preg_split('/[^a-zA-Z0-9_\x7f-\xff]+/', $mangled);
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return array_pop($parts);
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}
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/**
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* Find the first character position that differs
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* in two strings by binary chop.
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* @param string $first First string.
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* @param string $second String to compare with.
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* @return integer Position of first differing
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* character.
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* @access private
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*/
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protected function stringDiffersAt($first, $second) {
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if (! $first || ! $second) {
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return 0;
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}
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if (strlen($first) < strlen($second)) {
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list($first, $second) = array($second, $first);
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}
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$position = 0;
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$step = strlen($first);
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while ($step > 1) {
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$step = (integer)(($step + 1) / 2);
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if (strncmp($first, $second, $position + $step) == 0) {
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$position += $step;
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}
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}
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return $position;
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}
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/**
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* Sends a formatted dump of a variable to a string.
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* @param mixed $variable Variable to display.
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* @return string Output from print_r().
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* @access public
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*/
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function dump($variable) {
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ob_start();
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print_r($variable);
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$formatted = ob_get_contents();
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ob_end_clean();
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return $formatted;
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}
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}
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?>
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