常見數組函數

$a = array("a"=>"Cat","b"=>"Dog","c"=>"Horse","d"=>"Cow"); $b = array("a","b","c","d"); $c = array('ca','cb','cc','cd'); array_column($a, 'last_name', 'id');//二維數組中返回單列的值 array_change_key_case($a,CASE

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