《PHP實例：PHP合并數(shù)組+號和array_merge的區(qū)別》要點：
本文介紹了PHP實例：PHP合并數(shù)組+號和array_merge的區(qū)別，希望對您有用。如果有疑問，可以聯(lián)系我們。
PHP的數(shù)組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(shù)進行相加,兩者之間有點區(qū)別：PHP實戰(zhàn)
1.相加會證數(shù)組中的自然index不被重置
2.相加方法中,被加的數(shù)組內(nèi)的值不會被覆蓋
3.merge函數(shù)中的自然index會被重置
4.merge函數(shù),無所謂被merge和merge關(guān)系,越后面的array參數(shù),其值,會覆蓋較前面的array參數(shù)相同鍵的值PHP實戰(zhàn)
例子：PHP實戰(zhàn)
數(shù)組1：
PHP實戰(zhàn)
$arr1 = array(
10 => 'valueof10',
11 => 'valueof11',
'key1' => 'dataofkey1',
'key2' => 'dataofkey2',
'array' => array(
'key1' => 1,
'key2' => 'abc',
'key3' => array(
1, 2, 'name' => 'peter'
),
),
);
數(shù)組2：
PHP實戰(zhàn)
$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(jié)果比較：PHP實戰(zhàn)
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)
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