3v4l.org

run code in 300+ PHP versions simultaneously
<?php $packed = pack('h*', dechex(PHP_INT_MAX)); $packed = str_pad($packed, 64, "\x00", STR_PAD_RIGHT); $v = unpack('h*', $packed); $v = hexdec($v[1]); var_dump($packed); var_dump($v); var_dump(PHP_INT_MAX);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(64) "��������" float(6.703903964971299E+153) int(9223372036854775807)
Output for 4.4.0 - 4.4.1, 4.4.3 - 4.4.9, 5.0.5, 5.1.0 - 5.1.1, 5.1.3 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
string(64) "��������" float(6.7039039649713E+153) int(9223372036854775807)
Output for 4.4.2, 5.1.2
string(64) "��������" float(1.0726246343954E+155) int(9223372036854775807)
Output for 4.3.10, 5.0.3 - 5.0.4
Notice: Use of undefined constant PHP_INT_MAX - assumed 'PHP_INT_MAX' in /in/hU21o on line 2 Warning: unpack(): Type h: outside of string in /in/hU21o on line 4 string(64) "" int(0) Notice: Use of undefined constant PHP_INT_MAX - assumed 'PHP_INT_MAX' in /in/hU21o on line 8 string(11) "PHP_INT_MAX"
Output for 4.3.5 - 4.3.9, 4.3.11, 5.0.0 - 5.0.2
Notice: Use of undefined constant PHP_INT_MAX - assumed 'PHP_INT_MAX' in /in/hU21o on line 2 string(64) "" int(0) Notice: Use of undefined constant PHP_INT_MAX - assumed 'PHP_INT_MAX' in /in/hU21o on line 8 string(11) "PHP_INT_MAX"
Output for 4.3.0 - 4.3.4
Notice: Use of undefined constant PHP_INT_MAX - assumed 'PHP_INT_MAX' in /in/hU21o on line 2 Notice: Undefined offset: 1 in /in/hU21o on line 5 string(64) "" int(0) Notice: Use of undefined constant PHP_INT_MAX - assumed 'PHP_INT_MAX' in /in/hU21o on line 8 string(11) "PHP_INT_MAX"
preferences:
261.5 ms | 402 KiB | 345 Q