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@ 2014-12-28T21:43:37Z

<?php
$a='1.1.1';
if(preg_match("/^([0-9]+\.?[0-9]+)+$/",$a)){
    $b=json_decode($a);
  #  echo "DEBUG";
    if($var = $b === NULL){
        ($var===true)?$v3=1:NULL;
    }
}
echo $var;
?>

Output
Performance
VLD
References
Branches

json_decode: documentation ( source)
preg_match: documentation ( source)

preferences:dark modelive preview

28.32 ms | 402 KiB | 5 Q