- var_dump: documentation ( source)
<?php
$a = '0e123';
var_dump($a == 0);
var_dump($a == "0");
var_dump($a == 0x0);
var_dump($a == true);
var_dump($a == ' ');
echo !$a ? 'X' : 'O';
echo "\n";
var_dump($a == -$a);
echo "\n";
var_dump($a == '0x');
var_dump($a == '1x0');
var_dump($a == '1x0e');
echo "\n";
var_dump($a == '0xe');
var_dump($a == ('0' . 'x0e'));
var_dump($a == ('0' . 'xe'));