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@ 2014-04-07T17:55:18Z

<?php
function isInteger($input){
    return(ctype_digit(strval($input)));
}

$var = 0;

if(is_int($var)){
        echo "true";
    }else{
        echo "false";
    }

Output
Performance
VLD
References
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ctype_digit: documentation ( source)

preferences:dark modelive preview

53.5 ms | 402 KiB | 5 Q