C:/xampp/htdocs/moodle/lib/simpletestlib/dumper.php

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<?php
if (! defined('TYPE_MATTERS')) {
    define('TYPE_MATTERS', true);
}

class SimpleDumper {
    
    function describeValue($value) {
        $type = $this->getType($value);
        switch($type) {
            case "Null":
                return "NULL";
            case "Boolean":
                return "Boolean: " . ($value ? "true" : "false");
            case "Array":
                return "Array: " . count($value) . " items";
            case "Object":
                return "Object: of " . get_class($value);
            case "String":
                return "String: " . $this->clipString($value, 200);
            default:
                return "$type: $value";
        }
        return "Unknown";
    }
    
    function getType($value) {
        if (! isset($value)) {
            return "Null";
        } elseif (is_bool($value)) {
            return "Boolean";
        } elseif (is_string($value)) {
            return "String";
        } elseif (is_integer($value)) {
            return "Integer";
        } elseif (is_float($value)) {
            return "Float";
        } elseif (is_array($value)) {
            return "Array";
        } elseif (is_resource($value)) {
            return "Resource";
        } elseif (is_object($value)) {
            return "Object";
        }
        return "Unknown";
    }

    function describeDifference($first, $second, $identical = false) {
        if ($identical) {
            if (! $this->_isTypeMatch($first, $second)) {
                return "with type mismatch as [" . $this->describeValue($first) .
                    "] does not match [" . $this->describeValue($second) . "]";
            }
        }
        $type = $this->getType($first);
        if ($type == "Unknown") {
            return "with unknown type";
        }
        $method = '_describe' . $type . 'Difference';
        return $this->$method($first, $second, $identical);
    }
    
    function _isTypeMatch($first, $second) {
        return ($this->getType($first) == $this->getType($second));
    }

    function clipString($value, $size, $position = 0) {
        $length = strlen($value);
        if ($length <= $size) {
            return $value;
        }
        $position = min($position, $length);
        $start = ($size/2 > $position ? 0 : $position - $size/2);
        if ($start + $size > $length) {
            $start = $length - $size;
        }
        $value = substr($value, $start, $size);
        return ($start > 0 ? "..." : "") . $value . ($start + $size < $length ? "..." : "");
    }
    
    function _describeGenericDifference($first, $second) {
        return "as [" . $this->describeValue($first) .
                "] does not match [" .
                $this->describeValue($second) . "]";
    }
    
    function _describeNullDifference($first, $second, $identical) {
        return $this->_describeGenericDifference($first, $second);
    }
    
    function _describeBooleanDifference($first, $second, $identical) {
        return $this->_describeGenericDifference($first, $second);
    }
    
    function _describeStringDifference($first, $second, $identical) {
        if (is_object($second) || is_array($second)) {
            return $this->_describeGenericDifference($first, $second);
        }
        $position = $this->_stringDiffersAt($first, $second);
        $message = "at character $position";
        $message .= " with [" .
                $this->clipString($first, 200, $position) . "] and [" .
                $this->clipString($second, 200, $position) . "]";
        return $message;
    }
    
    function _describeIntegerDifference($first, $second, $identical) {
        if (is_object($second) || is_array($second)) {
            return $this->_describeGenericDifference($first, $second);
        }
        return "because [" . $this->describeValue($first) .
                "] differs from [" .
                $this->describeValue($second) . "] by " .
                abs($first - $second);
    }
    
    function _describeFloatDifference($first, $second, $identical) {
        if (is_object($second) || is_array($second)) {
            return $this->_describeGenericDifference($first, $second);
        }
        return "because [" . $this->describeValue($first) .
                "] differs from [" .
                $this->describeValue($second) . "] by " .
                abs($first - $second);
    }
    
    function _describeArrayDifference($first, $second, $identical) {
        if (! is_array($second)) {
            return $this->_describeGenericDifference($first, $second);
        }
        if (! $this->_isMatchingKeys($first, $second, $identical)) {
            return "as key list [" .
                    implode(", ", array_keys($first)) . "] does not match key list [" .
                    implode(", ", array_keys($second)) . "]";
        }
        foreach (array_keys($first) as $key) {
            if ($identical && ($first[$key] === $second[$key])) {
                continue;
            }
            if (! $identical && ($first[$key] == $second[$key])) {
                continue;
            }
            return "with member [$key] " . $this->describeDifference(
                    $first[$key],
                    $second[$key],
                    $identical);
        }
        return "";
    }
    
    function _isMatchingKeys($first, $second, $identical) {
        $first_keys = array_keys($first);
        $second_keys = array_keys($second);
        if ($identical) {
            return ($first_keys === $second_keys);
        }
        sort($first_keys);
        sort($second_keys);
        return ($first_keys == $second_keys);
    }
    
    function _describeResourceDifference($first, $second, $identical) {
        return $this->_describeGenericDifference($first, $second);
    }
    
    function _describeObjectDifference($first, $second, $identical) {
        if (! is_object($second)) {
            return $this->_describeGenericDifference($first, $second);
        }
        return $this->_describeArrayDifference(
                get_object_vars($first),
                get_object_vars($second),
                $identical);
    }
    
    function _stringDiffersAt($first, $second) {
        if (! $first || ! $second) {
            return 0;
        }
        if (strlen($first) < strlen($second)) {
            list($first, $second) = array($second, $first);
        }
        $position = 0;
        $step = strlen($first);
        while ($step > 1) {
            $step = (integer)(($step + 1) / 2);
            if (strncmp($first, $second, $position + $step) == 0) {
                $position += $step;
            }
        }
        return $position;
    }
    
    function dump($variable) {
        ob_start();
        print_r($variable);
        $formatted = ob_get_contents();
        ob_end_clean();
        return $formatted;
    }
}
?>