3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $fileContent = '12em\n1.3 em'; preg_replace_callback('/([0-9,-\.]+)\s*(em)/', 'replace_em', $fileContent); function replace_em($value) { return $value * 123; }
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Unsupported operand types in /in/uRr5k:6 Stack trace: #0 [internal function]: replace_em(Array) #1 /in/uRr5k(3): preg_replace_callback('/([0-9,-\\.]+)\\s...', 'replace_em', '12em\\n1.3 em') #2 {main} thrown in /in/uRr5k on line 6
Process exited with code 255.
Output for hhvm-3.10.0 - 3.12.0
Fatal error: Invalid operand type was used: cannot perform this operation with arrays in /in/uRr5k on line 6
Process exited with code 255.
Output for 4.3.2 - 5.6.28
Fatal error: Unsupported operand types in /in/uRr5k on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Unsupported operand types in /in/uRr5k on line 6