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@ 2018-03-23T07:39:30Z

<?php

function debug($variable)
{
    ob_start();
    var_dump($variable);
    $output = ob_get_clean();
    $maps = [
        'string'    => "/(string\((?P<length>\d+)\)) (?P<value>\"(?<!\\\).*\")/i",
        'array'     => "/\[\"(?P<key>.+)\"(?:\:\"(?P<class>[a-z0-9_\\\]+)\")?(?:\:(?P<scope>public|protected|private))?\]=>/Ui",
        'countable' => "/(?P<type>array|int|string)\((?P<count>\d+)\)/",
        'resource'  => "/resource\((?P<count>\d+)\) of type \((?P<class>[a-z0-9_\\\]+)\)/",
        'bool'      => "/bool\((?P<value>true|false)\)/",
        'float'     => "/float\((?P<value>[0-9\.]+)\)/",
        'object'    => "/object\((?P<class>\S+)\)\#(?P<id>\d+) \((?P<count>\d+)\)/i"
    ];
    foreach ($maps as $function => $pattern) {
        $output = preg_replace_callback($pattern, function ($matches) use ($function) {
            switch ($function) {
                case 'string':
                    $matches['value'] = htmlspecialchars($matches['value']);

                    return '<span style="color: #0000FF;">string</span>(<span style="color: #1287DB;">' . $matches['length'] . ')</span> <span style="color: #6B6E6E;">' . $matches['value'] . '</span>';
                case 'array':
                    $key = '<span style="color: #008000;">"' . $matches['key'] . '"</span>';
                    $class = '';
                    $scope = '';
                    if (isset($matches['class']) && !empty($matches['class'])) {
                        $class = ':<span style="color: #4D5D94;">"' . $matches['class'] . '"</span>';
                    }
                    if (isset($matches['scope']) && !empty($matches['scope'])) {
                        $scope = ':<span style="color: #666666;">' . $matches['scope'] . '</span>';
                    }

                    return '[' . $key . $class . $scope . ']=>';
                case 'countable':
                    $type = '<span style="color: #0000FF;">' . $matches['type'] . '</span>';
                    $count = '(<span style="color: #1287DB;">' . $matches['count'] . '</span>)';

                    return $type . $count;
                case 'bool':
                    return '<span style="color: #0000FF;">bool</span>(<span style="color: #0000FF;">' . $matches['value'] . '</span>)';
                case 'float':
                    return '<span style="color: #0000FF;">float</span>(<span style="color: #1287DB;">' . $matches['value'] . '</span>)';
                case 'resource':
                    return '<span style="color: #0000FF;">resource</span>(<span style="color: #1287DB;">' . $matches['count'] . '</span>) of type (<span style="color: #4D5D94;">' . $matches['class'] . '</span>)';
                case 'object':
                    return '<span style="color: #0000FF;">object</span>(<span style="color: #4D5D94;">' . $matches['class'] . '</span>)#' . $matches['id'] . ' (<span style="color: #1287DB;">' . $matches['count'] . '</span>)';
            }
        }, $output);
    }
    $header = '';
    list($debugfile) = debug_backtrace();
    if (!empty($debugfile['file'])) {
        $header = '<h4 style="border-bottom:1px solid #bbb;font-weight:bold;margin:0 0 10px 0;padding:3px 0 10px 0">' . $debugfile['file'] . '</h4>';
    }
    echo '<pre style="background-color: #CDDCF4;border: 1px solid #bbb;border-radius: 4px;-moz-border-radius:4px;-webkit-border-radius\:4px;font-size:12px;line-height:1.4em;margin:30px;padding:7px">' . $header . $output . '</pre>';
}


debug(['foo', 'bar', 'baz', 42]);

Output for git.master, git.master_jit, rfc.property-hooks: <pre style="background-color: #CDDCF4;border: 1px solid #bbb;border-radius: 4px;-moz-border-radius:4px;-webkit-border-radius\:4px;font-size:12px;line-height:1.4em;margin:30px;padding:7px"><h4 style="border-bottom:1px solid #bbb;font-weight:bold;margin:0 0 10px 0;padding:3px 0 10px 0">/in/iupYJ</h4><span style="color: #0000FF;">array</span>(<span style="color: #1287DB;">4</span>) { [0]=> <span style="color: #0000FF;">string</span>(<span style="color: #1287DB;">3)</span> <span style="color: #6B6E6E;">"foo"</span> [1]=> <span style="color: #0000FF;">string</span>(<span style="color: #1287DB;">3)</span> <span style="color: #6B6E6E;">"bar"</span> [2]=> <span style="color: #0000FF;">string</span>(<span style="color: #1287DB;">3)</span> <span style="color: #6B6E6E;">"baz"</span> [3]=> <span style="color: #0000FF;">int</span>(<span style="color: #1287DB;">42</span>) } </pre>

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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