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<?php $array = array(); $array['mes'] = ''; echo array_key_exists( 'mes', $array ); echo array_key_exists( 'hoge', $array ); if ($array['mes']) { echo "y"; }else{ echo "n"; }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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
1n
preferences:
281.22 ms | 404 KiB | 376 Q