加入陣列

Question

假設我有兩個數組類似如下的兩個或更多陣列：

$arr2 = array(array("first", "second"), array("third", "fourth")); 
$arr3 = array(array("fifth", "sixth", "seventh"), array("eighth", "ninth"), array("tenth", "eleventh")); 

而且我想這樣的結果：

$arr4 = array("first", "second", "third", "fourth", "fifth", "sixth", "seventh","eighth", "ninth","tenth", "eleventh"); 

如何做到這一點？ in PHP

Answer 1

你想扁平化和組合數組。有一個很好的功能，用於在array_values的PHP手冊評論壓扁，http://www.php.net/manual/en/function.array-values.php#104184

下面的代碼：

/** 
* Flattens an array, or returns FALSE on fail. 
*/ 
function array_flatten($array) { 
    if (!is_array($array)) { 
    return FALSE; 
    } 
    $result = array(); 
    foreach ($array as $key => $value) { 
    if (is_array($value)) { 
     $result = array_merge($result, array_flatten($value)); 
    } 
    else { 
     $result[$key] = $value; 
    } 
    } 
    return $result; 
} 

上array($arr2, $arr3)只要運行這個。

Answer 2

function flatten($ar,&$res) { 
    if (is_array($ar)) 
    foreach ($ar as $e) flatten($e,$res); 
    else 
    $res[]=$ar; 
} 

$arr2 = array(array("first", "second"), array("third", "fourth")); 
$arr3 = array(array("fifth", "sixth", "seventh"), array("eighth", "ninth"), array("tenth", "eleventh")); 

$arr4=array(); 
flatten($arr2,$arr4); 
flatten($arr3,$arr4);