Question

下面是我的数组，我希望将[image] => 201310171708033183470.jpg替换为完整路径，如：

 [image] => http://localhost/website/uploads/201310171708033183470.jpg

我想提供下面所有图片名称的完整路径：

[images] => Array
            (
                [0] => Array
                    (
                        [id] => 12
                        [product_id] => 9
                        [image] => 201310171708033183470.jpg
                        [order] => 1
                        [status] => 1
                        [created] => 2013-10-17 17:08:03
                        [modified] => 2013-10-17 17:08:03
                    )

                [1] => Array
                    (
                        [id] => 11
                        [product_id] => 9
                        [image] => 201310171514176427410.jpg
                        [order] => 1
                        [status] => 1
                        [created] => 2013-10-17 15:14:17
                        [modified] => 2013-10-17 15:14:17
                    )

                [2] => Array
                    (
                        [id] => 10
                        [product_id] => 9
                        [image] => 201310171514066591090.jpg
                        [order] => 1
                        [status] => 1
                        [created] => 2013-10-17 15:14:06
                        [modified] => 2013-10-17 15:14:06
                    )

                [3] => Array
                    (
                        [id] => 9
                        [product_id] => 9
                        [image] => 201310171513591880300.jpg
                        [order] => 1
                        [status] => 1
                        [created] => 2013-10-17 15:13:59
                        [modified] => 2013-10-17 15:13:59
                    )

            )

哪种方式最快，最优化？

Answer 1

希望它有所帮助，

    foreach($images as $k=>$image ){

        $image['image'] = 'http://localhost/website/uploads/'.$image['image'];
    }

Answer 2

你必须使用＆amp;使用foreach来使用变量本身而不是变量的副本。

foreach($products as &$product) {
   $product['image'] = 'http://localhost/website/uploads/' . $product['image'];
}

另一种方法是使用array_map：

function addpath($product){
   $product['image'] = 'http://localhost/website/uploads/' . $product['image'];
    return $product;
}
$products = array_map('addpath', $products);

或者array_walk：

function addpath(&$product) {
   $product['image'] = 'http://localhost/website/uploads/' . $product['image'];
}
array_walk($products, 'addpath');

对于您的测试阵列，第一种方式似乎更快。使用大型数组（70000个项目），您可以获得foreach＆lt; array_walk＆lt; array_map，其速度比其他两个快1.5倍。

PHP：使用正则表达式或preg表达式替换Array中的文本值

2 个答案: