3v4l.org

run code in 300+ PHP versions simultaneously
<?php function _empty($value) { return $value ? 'non_empty' : 'empty'; } function _empty_fix($value) { $value = is_numeric($value) ? $value+0 : $value; return $value ? 'non_empty' : 'empty'; } echo "normal :\n"; echo "\n0 : ", _empty(0); echo "\n0.0 : ", _empty(0.0); echo "\n'0' : ", _empty('0'); echo "\n'0.0' : ", _empty('0.0'); echo "\n\nfix :\n"; echo "\n0 : ", _empty_fix(0); echo "\n0.0 : ", _empty_fix(0.0); echo "\n'0' : ", _empty_fix('0'); echo "\n'0.0' : ", _empty_fix('0.0');
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 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, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
normal : 0 : empty 0.0 : empty '0' : empty '0.0' : non_empty fix : 0 : empty 0.0 : empty '0' : empty '0.0' : empty
preferences:
204.68 ms | 406 KiB | 359 Q