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run code in 150+ php & hhvm versions
Bugs & Features
<?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 4.4.0 - 4.4.1, 4.4.3 - 4.4.9, 5.0.5 - 5.1.1, 5.1.3 - 7.1.0
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"