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run code in 300+ PHP versions simultaneously
<?php $a = array(null); var_dump( empty( $a ) ); //bool(false) var_dump( !(bool)$a ); //bool(true) $b = array(false); var_dump( empty( $b ) ); //bool(false) var_dump( !(bool)$b ); //bool(true) $c = array(0); var_dump( empty( $c ) ); //bool(false) var_dump( !(bool)$c ); //bool(false) $d = array(''); var_dump( empty( $d ) ); //bool(false) var_dump( !(bool)$d ); //bool(false) $e = array(); var_dump( empty( $e ) ); //bool(true) var_dump( !(bool)$e ); //bool(false)
Output for 4.3.0 - 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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 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
bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(true) bool(true)
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/CZiWA on line 21
Process exited with code 255.
preferences:
217.08 ms | 401 KiB | 314 Q