- var_dump: documentation ( source)
<?php
class Test {
public $assoc = [
'9999999999999999999' => 'large number',
'99999' => 'small number',
];
public function check() {
var_dump(
isset($this->assoc['9999999999999999999']),
isset($this->assoc['99999'])
);
}
}
$t = new Test;
$t->check();