3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo is_number( "123" );
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Call to undefined function is_number() in /in/86mHp:3 Stack trace: #0 {main} thrown in /in/86mHp on line 3
Process exited with code 255.
Output for 5.0.0 - 5.6.28
Fatal error: Call to undefined function is_number() in /in/86mHp on line 3
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: is_number() in /in/86mHp on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: is_number() in /in/86mHp on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: is_number() in /in/86mHp on line 3