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@ 2015-10-14T14:31:03Z

<?php
preg_match("/(\w+)?/", "",$matches);
print_r($matches);
echo "\n";
preg_match("/(\w*)/", "",$matches);
print_r($matches);
$test='test';
$btest= preg_match("/^\w+$/i", $test);
print_r($test);
print_r($btest);

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)
print_r: documentation ( source)

preferences:dark modelive preview

34.84 ms | 402 KiB | 5 Q