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<?php $a = "0"; echo "'0' is empty?",empty($a),"\n"; echo "'' == '0'?"; var_dump("" == "0"); echo "FALSE == '' and FALSE == '0'?"; var_dump(FALSE == ""); var_dump(FALSE == "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
'0' is empty?1 '' == '0'?bool(false) FALSE == '' and FALSE == '0'?bool(true) bool(true)
preferences:
247.01 ms | 406 KiB | 359 Q