php_real_equivalence_4($x, $y, null); php > var_dump(md5('240610708') == md5('QNKCDZO'));
bool(true)
php > var_dump(md5('240610708'), md5('QNKCDZO'));
string(32) "0e462097431906509019562988736854"
string(32) "0e830400451993494058024219903391"
php > var_dump(md5('240610708') === md5('QNKCDZO'));
bool(false)
php > var_dump("0e462097431906509019562988736854" == "0e830400451993494058024219903391");
bool(true)
php > var_dump("0e462097431906509019562988736854" === "0e830400451993494058024219903391");
bool(false)
php > var_dump(md5('240610708') === md5('QNKCDZO'));
bool(false)
php > var_dump(md5('240610708') == md5('QNKCDZO'));
bool(true)
php > var_dump(md5('240610708') === md5('QNKCDZO'));
bool(false)
Fortunately, there are quite a few workarounds and opportunities that minimize all the associated risks ...