这篇文章主要介绍了PHP合并数组 号和array_merge的区别,PHP的数组融合一般有两种做法,一种是直接使用加号相加,另一种则是使用array_merge函数进行相加,两者之间有点区别,需要的朋友可以参考下　　PHP的数组融合一般有两种做法，一种是直接使用加号相加，另一种则是使用array_merge函数进行相加，两者之间有点区别：　　1.相加会证数组中的自然index不被重置　　2.相加方法中，被加的数组内的值不会被覆盖　　3.merge函数中的自然index会被重置　　4.merge函数，无所谓被merge和merge关系，越后面的array参数，其值，会覆盖较前面的array参数相同键的值　　例子：　　数组1：　　? 1 2 3 4 5 6 7 8 9 10 11 12 13 $arr1 = array( 10 = 'valueof10', 11 = 'valueof11', 'key1' = 'dataofkey1', 'key2' = 'dataofkey2', 'array' = array( 'key1' = 1, 'key2' = 'abc', 'key3' = array( 1, 2, 'name' = 'peter' ), ), ); 　　数组2：　　? 1 2 3 4 5 6 7 8 9 10 11 12 13 $arr2 = array( 10 = 'newvalueof10', 11 = 'newvalueof11', 'key1' = 'newdataofkey1', 'key3' = 'newdataofkey3', 'array' = array( 'key1' = 2, 'key2' = 'defg', 'key3' = array( 1, 2, 'name' = 'jonathan', 'gender' = 'male' ), ), ); 　　结果比较：　　? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 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)