Online PHP editor | output for d9FBq

@ 2015-07-21T20:28:18Z

<?php

error_reporting(0);

$str = [];
$characters = '0123456789abcdefghijklmnopqrstuvwxyz';

for($x = 0; $x < 50000; $x++) {
    $randomString = '';
    for ($i = 0; $i < 32; $i++) {
    	$randomString .= $characters[rand(0, strlen($characters) - 1)];
    }
    
    $str[$randomString]++;
}
$collisions = array_filter(function($a) {
    return ($a > 1);
});

print_r($collisions);

Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.26, 7.3.0 - 7.3.13, 7.4.0 - 7.4.1
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29: Parse error: syntax error, unexpected '[' in /in/d9FBq on line 5
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 '[' in /in/d9FBq on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/d9FBq on line 5
Process exited with code 255.

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