- var_dump: documentation ( source)
<?php
echo "0 to string comparison: " . PHP_EOL;
var_dump(array(
'0 == "one"' => (0 == "one"),
'0 == "null"' => (0 == "null"),
'0 == "1"' => (0 == "1"),
'0 == "0"' => (0 == "0"),
'0 == ""' => (0 == ""),
));