3v4l.org

run code in 300+ PHP versions simultaneously
<?php $inputs = array(NULL, 0, 1, 1.1, '1.1'); foreach ($inputs as $input) { $output = key(array($input => NULL)); printf("Input: %s\n", var_export($input, TRUE)); printf("Output: %s\n\n", var_export($output, TRUE)); }
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Input: NULL Output: '' Input: 0 Output: 0 Input: 1 Output: 1 Deprecated: Implicit conversion from float 1.1 to int loses precision in /in/taXU1 on line 4 Input: 1.1 Output: 1 Input: '1.1' Output: '1.1'
Output for 4.4.1, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.21, 5.5.0 - 5.5.5, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
Input: NULL Output: '' Input: 0 Output: 0 Input: 1 Output: 1 Input: 1.1 Output: 1 Input: '1.1' Output: '1.1'
Output for 5.4.22 - 5.4.45, 5.5.6 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
Input: NULL Output: '' Input: 0 Output: 0 Input: 1 Output: 1 Input: 1.1000000000000001 Output: 1 Input: '1.1' Output: '1.1'
Output for 4.3.2 - 4.3.11, 4.4.0, 4.4.2 - 4.4.9, 5.0.0 - 5.0.5
Fatal error: Only variables can be passed by reference in /in/taXU1 on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Only variables can be passed by reference in /in/taXU1 on line 4

preferences:
273.52 ms | 401 KiB | 460 Q