3v4l.org

run code in 300+ PHP versions simultaneously

sponsor
bughunt
search
recent
about

@ 2021-05-26T21:52:39Z

<?php

function foo($bar) {
  return $bar * 2;
}

$x = 'foo';


echo ( true === is_callable($x) ? 'T' : 'F' );
  
echo ( 4 == $x(2) ? 'T' : 'F' );

Output
Performance
VLD
References
Branches

is_callable: documentation ( source)

preferences:dark modelive previewkey bindings

100.09 ms | 404 KiB | 5 Q