Online PHP editor | output for 68iOc

@ 2014-09-12T17:57:08Z

<?php

function uuid($c = 4) {
    $x = function($c) {
        for ($n = ''; strlen($n) < $c + 1; $n = $n.base_convert(mt_rand(), 10, 16));
        return substr($n, -$c);
    };
    
	return 
        microtime(true) * 10000.'-'.$x($c).'-'.$x($c).'-'.$x($c).'-'.$x($c).'-'.$x($c).'-'.$x($c)
    ;
    return sprintf(
        '%x-%s-%s-%s-%s%s%s',
        microtime(true) * 10000, $x($c), $x($c), $x($c), $x($c), $x($c), $x($c)
    );
}

$time = microtime();
$uuids = array();
for ($i = 0; $i < 100; $i++) {
	$uuids[] = uuid();
}

if (count(array_unique($uuids)) != count($uuids)) {
	echo 'DUPLICATED';
} else {
	echo 'No duplicate';
print_r($uuids);
}

Output for 5.4.0 - 5.4.32: Parse error: syntax error, unexpected ''-'' (T_CONSTANT_ENCAPSED_STRING) in /in/68iOc on line 10
Process exited with code 255.
Output for 5.3.0 - 5.3.29: Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /in/68iOc on line 10
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17: Parse error: syntax error, unexpected T_FUNCTION in /in/68iOc on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5: Parse error: parse error, unexpected T_FUNCTION in /in/68iOc on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/68iOc on line 4
Process exited with code 255.

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