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@ 2013-08-24T21:35:00Z

<?php
var_dump(preg_match('@^\$([a-zA-Z_\x7f-\xff]+)$@i','$atuamae='));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
preg_match: documentation ( source)

preferences:dark modelive preview

37.51 ms | 402 KiB | 5 Q