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@ 2015-03-17T10:00:45Z

<?php
$string = '123444 ';

if (is_numeric($string)) {
   echo "Its Numeric";
} else {
   echo "Its NOT Numeric";
}

Output
Performance
VLD
References
Branches

is_numeric: documentation ( source)

preferences:dark modelive preview

43.84 ms | 402 KiB | 5 Q