Online PHP editor | perf for CF6fH

@ 2014-11-11T23:26:12Z

<?php

if (!function_exists('ldap_escape')) {
    echo "defining\n";
    define('LDAP_ESCAPE_FILTER', 0x01);
    define('LDAP_ESCAPE_DN',     0x02);

    /**
     * @param string $subject The subject string
     * @param string $ignore Set of characters to leave untouched
     * @param int $flags Any combination of LDAP_ESCAPE_* flags to indicate the
     *                   set(s) of characters to escape.
     * @return string
     */
    function ldap_escape($subject, $ignore = '', $flags = 0)
    {
        static $charMaps = array(
            LDAP_ESCAPE_FILTER => array('\\', '*', '(', ')', "\x00"),
            LDAP_ESCAPE_DN     => array('\\', ',', '=', '+', '<', '>', ';', '"', '#'),
        );

        // Pre-process the char maps on first call
        if (!isset($charMaps[0])) {
            $charMaps[0] = array();
            for ($i = 0; $i < 256; $i++) {
                $charMaps[0][chr($i)] = sprintf('\\%02x', ord($i));;
            }

            for ($i = 0, $l = count($charMaps[LDAP_ESCAPE_FILTER]); $i < $l; $i++) {
                $chr = $charMaps[LDAP_ESCAPE_FILTER][$i];
                unset($charMaps[LDAP_ESCAPE_FILTER][$i]);
                $charMaps[LDAP_ESCAPE_FILTER][$chr] = $charMaps[0][$chr];
            }

            for ($i = 0, $l = count($charMaps[LDAP_ESCAPE_DN]); $i < $l; $i++) {
                $chr = $charMaps[LDAP_ESCAPE_DN][$i];
                unset($charMaps[LDAP_ESCAPE_DN][$i]);
                $charMaps[LDAP_ESCAPE_DN][$chr] = $charMaps[0][$chr];
            }
        }

        // Create the base char map to escape
        $flags = (int)$flags;
        $charMap = array();
        if ($flags & LDAP_ESCAPE_FILTER) {
            $charMap += $charMaps[LDAP_ESCAPE_FILTER];
        }
        if ($flags & LDAP_ESCAPE_DN) {
            $charMap += $charMaps[LDAP_ESCAPE_DN];
        }
        if (!$charList) {
            $charMap = $charMaps[0];
        }

        // Remove any chars to ignore from the list
        $ignore = (string)$ignore;
        for ($i = 0, $l = strlen($ignore); $i < $l; $i++) {
            unset($charMap[$ignore[$i]]);
        }

        // Do the main replacement
        $result = strtr($subject, $charMap);

        // Encode leading/trailing spaces if LDAP_ESCAPE_DN is passed
        if ($flags & LDAP_ESCAPE_DN) {
            if ($result[0] === ' ') {
                $result = '\\20' . substr($result, 1);
            }
            if ($result[strlen($result) - 1] === ' ') {
                $result = substr($result, 0, -1) . '\\20';
            }
        }

        return $result;
    }
}

$subject = "(one \\f #)"

echo ldap_escape($subject) . "\n";
echo ldap_escape($subject, '', LDAP_ESCAPE_DN) . "\n";
echo ldap_escape($subject, '', LDAP_ESCAPE_FILTER) . "\n";
echo ldap_escape($subject, '#', LDAP_ESCAPE_DN) . "\n";
echo ldap_escape($subject, '(', LDAP_ESCAPE_FILTER) . "\n";

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
5.4.34	0.007	0.033	12.04
5.4.32	0.006	0.044	12.54
5.4.31	0.007	0.037	12.54
5.4.30	0.009	0.043	12.54
5.4.29	0.009	0.048	12.53
5.4.28	0.006	0.039	12.43
5.4.27	0.006	0.036	12.43
5.4.26	0.007	0.036	12.43
5.4.25	0.008	0.041	12.43
5.4.24	0.006	0.038	12.43
5.4.23	0.004	0.040	12.42
5.4.22	0.003	0.044	12.42
5.4.21	0.010	0.049	12.42
5.4.20	0.007	0.043	12.42
5.4.19	0.007	0.037	12.41
5.4.18	0.008	0.041	12.42
5.4.17	0.009	0.039	12.43
5.4.16	0.008	0.033	12.42
5.4.15	0.007	0.036	12.41
5.4.14	0.005	0.040	12.11
5.4.13	0.007	0.035	12.09
5.4.12	0.007	0.037	12.05
5.4.11	0.010	0.036	12.05
5.4.10	0.007	0.040	12.05
5.4.9	0.005	0.038	12.05
5.4.8	0.007	0.037	12.05
5.4.7	0.007	0.034	12.05
5.4.6	0.005	0.035	12.04
5.4.5	0.004	0.039	12.05
5.4.4	0.005	0.041	12.03
5.4.3	0.010	0.039	12.03
5.4.2	0.003	0.044	12.03
5.4.1	0.010	0.038	12.03
5.4.0	0.008	0.042	11.52
5.3.29	0.004	0.046	12.80
5.3.28	0.012	0.038	12.71
5.3.27	0.009	0.044	12.72
5.3.26	0.007	0.044	12.72
5.3.25	0.008	0.039	12.72
5.3.24	0.007	0.040	12.72
5.3.23	0.009	0.040	12.70
5.3.22	0.007	0.037	12.68
5.3.21	0.009	0.043	12.68
5.3.20	0.006	0.036	12.68
5.3.19	0.009	0.044	12.68
5.3.18	0.010	0.038	12.68
5.3.17	0.006	0.037	12.68
5.3.16	0.006	0.037	12.67
5.3.15	0.009	0.034	12.68
5.3.14	0.006	0.037	12.66
5.3.13	0.010	0.039	12.66
5.3.12	0.009	0.035	12.66
5.3.11	0.006	0.041	12.66
5.3.10	0.007	0.040	12.14
5.3.9	0.008	0.035	12.13
5.3.8	0.003	0.040	12.12
5.3.7	0.008	0.040	12.12
5.3.6	0.005	0.041	12.10
5.3.5	0.007	0.036	12.05
5.3.4	0.011	0.032	12.05
5.3.3	0.004	0.037	12.01
5.3.2	0.007	0.041	11.80
5.3.1	0.011	0.036	11.76
5.3.0	0.010	0.037	11.74
5.2.17	0.004	0.037	9.25
5.2.16	0.008	0.029	9.25
5.2.15	0.005	0.038	9.25
5.2.14	0.005	0.030	9.25
5.2.13	0.006	0.029	9.21
5.2.12	0.006	0.028	9.20
5.2.11	0.005	0.028	9.22
5.2.10	0.004	0.029	9.20
5.2.9	0.008	0.033	9.21
5.2.8	0.005	0.029	9.20
5.2.7	0.005	0.030	9.20
5.2.6	0.003	0.031	9.16
5.2.5	0.007	0.027	9.13
5.2.4	0.002	0.031	9.11
5.2.3	0.004	0.030	9.08
5.2.2	0.003	0.032	9.07
5.2.1	0.006	0.029	8.97
5.2.0	0.005	0.034	8.84
5.1.6	0.004	0.024	8.12
5.1.5	0.005	0.025	8.12
5.1.4	0.006	0.026	8.10
5.1.3	0.006	0.032	8.45
5.1.2	0.004	0.027	8.47
5.1.1	0.007	0.025	8.19
5.1.0	0.003	0.032	8.19
5.0.5	0.004	0.025	6.68
5.0.4	0.005	0.020	6.54
5.0.3	0.004	0.034	6.36
5.0.2	0.004	0.021	6.31
5.0.1	0.004	0.022	6.30
5.0.0	0.004	0.030	6.29
4.4.9	0.000	0.018	4.78
4.4.8	0.007	0.015	4.75
4.4.7	0.005	0.013	4.75
4.4.6	0.001	0.017	4.76
4.4.5	0.004	0.014	4.77
4.4.4	0.003	0.025	4.71
4.4.3	0.003	0.015	4.76
4.4.2	0.004	0.018	4.84
4.4.1	0.003	0.019	4.85
4.4.0	0.004	0.025	4.76
4.3.11	0.009	0.013	4.67
4.3.10	0.006	0.015	4.67
4.3.9	0.001	0.020	4.64
4.3.8	0.004	0.024	4.58
4.3.7	0.004	0.014	4.63
4.3.6	0.001	0.019	4.63
4.3.5	0.004	0.015	4.63
4.3.4	0.002	0.025	4.54
4.3.3	0.006	0.015	3.34
4.3.2	0.003	0.016	3.31
4.3.1	0.002	0.017	3.27
4.3.0	0.020	0.020	6.89

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