這篇文章主要介紹PHP陣列融合的兩種方法,有興趣的朋友參考下,希望對大家有幫助。
PHP的陣列融合一般有兩種做法,一種是直接使用加號相加,另一種則是使用array_merge函數進行相加,兩者之間有點區別:
1.相加會證數組中的自然index不被重置
2.相加方法中,被加的數組內的值不會被覆蓋
3.merge函數中的自然index會被重置
4.merge函數,無所謂被merge和merge關係,越後面的array參數,其值,會覆蓋較前面的array參數相同鍵的值
例子:
陣列1:
$arr1 = array( 10 => 'valueof10', 11 => 'valueof11', 'key1' => 'dataofkey1', 'key2' => 'dataofkey2', 'array' => array( 'key1' => 1, 'key2' => 'abc', 'key3' => array( 1, 2, 'name' => 'peter' ), ), );
陣列2:
$arr2 = array( 10 => 'newvalueof10', 11 => 'newvalueof11', 'key1' => 'newdataofkey1', 'key3' => 'newdataofkey3', 'array' => array( 'key1' => 2, 'key2' => 'defg', 'key3' => array( 1, 2, 'name' => 'jonathan', 'gender' => 'male' ), ), );
結果比較:
array (size=6) 10 => string 'valueof10' (length=9) 11 => string 'valueof11' (length=9) 'key1' => string 'dataofkey1' (length=10) 'key2' => string 'dataofkey2' (length=10) 'array' => array (size=3) 'key1' => int 1 'key2' => string 'abc' (length=3) 'key3' => array (size=3) 0 => int 1 1 => int 2 'name' => string 'peter' (length=5) 'key3' => string 'newdataofkey3' (length=13) array (size=8) 0 => string 'valueof10' (length=9) 1 => string 'valueof11' (length=9) 'key1' => string 'newdataofkey1' (length=13) 'key2' => string 'dataofkey2' (length=10) 'array' => array (size=3) 'key1' => int 2 'key2' => string 'defg' (length=4) 'key3' => array (size=4) 0 => int 1 1 => int 2 'name' => string 'jonathan' (length=8) 'gender' => string 'male' (length=4) 2 => string 'newvalueof10' (length=12) 3 => string 'newvalueof11' (length=12) 'key3' => string 'newdataofkey3' (length=13)
總結:以上就是本篇的全部內容,希望能對大家的學習有所幫助。
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