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run code in 200+ php & hhvm versions
Bugs & Features
<?php $string = "+090-1222"; echo (preg_match('/^[0-9-+]+\z/u', $string)) ? 'true' : 'false'; echo "\n"; echo (preg_match('/^[0-9-+]+/u', $string)) ? 'true' : 'false'; $string = 12345; echo (is_string($string)) ? 'true' : 'false';
Output for 4.3.0 - 7.1.7
true truefalse