3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test = array( NAN ); function array_is_list_1( $arr ) { if ( ( array() === $arr ) ) { return true; } if ( ( array_values( $arr ) === $arr ) ) { return true; } return false; } var_dump(array_values( array( NAN ) ) === array( NAN ) ); // false var_dump( array() === array( NAN ) ); // false var_dump( array_is_list_1( $test ) ); // false on PHP 7.0 and PHP 7.1. true on PHP 7.2+
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
bool(false) bool(false) bool(true)
Output for 4.3.6 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
bool(false) bool(false) bool(false)
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/nPN8l on line 22
Process exited with code 255.
Output for 4.3.0 - 4.3.5
Notice: Use of undefined constant NAN - assumed 'NAN' in /in/nPN8l on line 3 Notice: Use of undefined constant NAN - assumed 'NAN' in /in/nPN8l on line 18 Notice: Use of undefined constant NAN - assumed 'NAN' in /in/nPN8l on line 18 bool(true) Notice: Use of undefined constant NAN - assumed 'NAN' in /in/nPN8l on line 20 bool(false) bool(true)
preferences:
124.11 ms | 482 KiB | 5 Q