排序不起作用。
我的控制器页面
$price = $_POST['price'];
$search = $_POST['search'];
$cat_id = $_POST['category'];
$post1 = file_get_contents("...?search=".$search."&category=".$cat_id);
$products = CJSON::decode($post1, true);
if($price == 1)
{
function prod($a, $b) {
return $a["retail_price"] - $b["retail_price"];
}
usort($products, "prod");
echo "<pre>";print_r($products);die;
}
它不会按排序顺序打印结果。$products是一个数组
Array
(
[0] => Array
(
[0] => Array
(
[id] => 11027
[title] => SPIDERMAN ENGRAVED LIGHTER
[barcode] => LEN-0022
[qty] => 8
[url] => http://www.ebay.com/itm/-/381279328138?
[retail_price] => 9.99
[category] => Array
(
[id] => 34
[name] => ENGRAVED LIGHTERS
)
[bin] => Array
(
[id] => 346
[name] => F10
)
[images] => Array
(
[0] => Array
(
[small] => http://www.heygidday.biz/portal//timthumb.php?src=/files/products/dscn124900.jpg&w=30
[middle] => http://www.heygidday.biz/portal//timthumb.php?src=/files/products/dscn124900.jpg&w=100
[source] => http://www.heygidday.biz/portal/files/products/dscn124900.jpg
)
)
)
[1] => Array
(
[id] => 11548
[title] => SPIDER MAN Black Lighter
[barcode] => LEN-0067
[qty] => 6
[url] => http://www.ebay.com/itm/-/361369988738?
[retail_price] => 10.99
[category] => Array
(
[id] => 34
[name] => ENGRAVED LIGHTERS
)
[bin] => Array
(
[id] => 346
[name] => F10
)
[images] => Array
(
[0] => Array
(
[small] => http://www.heygidday.biz/portal//timthumb.php?src=/files/products/len-00670.jpg&w=30
[middle] => http://www.heygidday.biz/portal//timthumb.php?src=/files/products/len-00670.jpg&w=100
[source] => http://www.heygidday.biz/portal/files/products/len-00670.jpg
)
)
)
)
)
这是我在数组按retail_price排序时得到的结果。排序不起作用，为什么会这样????谁能帮我解决这个问题????等待回应...
$products不仅仅是一个数组，而是数组中的数组：
$products = array( array( product1, product2 ) );
你不想要周围的数组，所以就做
$post1 = file_get_contents("...?search=".$search."&category=".$cat_id);
$data = CJSON::decode($post1, true);
$products = $data[0];
//...
站点说明：不应在运行的代码中声明函数。这往往会导致奇怪的错误。
相反，只需在顶部声明它，或使用匿名函数。
$prod = function($a, $b) {
return $a["retail_price"] - $b["retail_price"];
}
usort($products, $prod);