php合并數組我們可以使用array_merge()函數,array_merge()函數返回一個聯合的數組。所得到的數組以第一個輸入數組參數開始,按后面數組參數出現的順序依次追加。其形式為:
array array_merge (array array1 array2…,arrayN)下面是一個PHP合并數組的例子:
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1 | <?php |
2 | $fruits = array ( "apple" , "banana" , "pear" ); |
3 | $numbered = array ( "1" , "2" , "3" ); |
4 | $cards = array_merge ( $fruits , $numbered ); |
5 | print_r( $cards ); |
6 | // 輸出結果: |
7 | // Array ( [0] => apple [1] => banana [2] => pear [3] => 1 [4] => 2 [5] => 3 ) |
8 | ?> |
用PHP追加數組,使用array_merge_recursive(),將兩個數組合并在一起,注意,與array_merge()函數是不一樣的,array_merge()的兩個數組有重復項時會覆蓋掉,而array_merge_recursive()則不會。array_merge_recursive()語法:
array array_merge_recursive(array array1,array array2[…,array arrayN])下面是一個PHP追加數組的例子:
1 | <?php |
2 | $fruit1 = array ( "apple" => "red" , "banana" => "yellow" ); |
3 | $fruit2 = array ( "pear" => "yellow" , "apple" => "green" ); |
4 | $result = array_merge_recursive ( $fruit1 , $fruit2 ); |
5 | print_r( $result ); |
6 | // 輸出結果: |
7 | // Array ( [apple] => Array ( [0] => red [1] => green ) [banana] => yellow [pear] => yellow ) |
8 | ?> |
現在apple 指向一個數組,由兩個顏色值組成的索引數組。
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