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我正在使用 php 从一系列 woocommerce (wordpress) 购物车项目中提取类别名称，如下所示：

<?php $stack = array();
    foreach ( $woocommerce->cart->get_cart() as $cart_item_key => $values ) {
    $_product = $values['data'];
    $category = $_product->get_categories();
    array_push($stack, $category);              
}

如果购物车中有两个产品，每个产品都有不同的类别，则输出print_r($stack)可能是：Array ( [0] => Thanksgiving [1] => Poultry )

无论产品如何，我都需要像这样运行条件语句：

if (in_array( 'T-Shirts', $stack[1] )) echo "True"; else echo "False";

上面的条件只是查看数组中的第二项，而不是全部。如何搜索数组中的所有项目？

4

1 回答 1

1 
$category = $_product->get_categories();
preg_match_all("`<[^>]+>([^<]+)</[^>]+>`", $category, $categories);
if ( in_array( 'Pants', $categories[1] ) ) {
?>
    <h2>This product has Pants, and potentially other categories</h2>
<?php
}

$categories[1] 是一个数组，其中每个元素都是一个类别。in_array() 检查请求的值是否在数组中的任何位置。

测试它：

$category = '<a href="linktocategorypage" rel="tag">T-Shirts</a><a href="linktocategorypage" rel="tag">Pants</a>';
preg_match_all("`<[^>]+>([^<]+)</[^>]+>`", $category, $categories);
$pants = in_array( 'Pants', $categories[1] );
if ($pants) echo "True"; else echo "False";
print_r($categories[1]);

产量：

True

Array
(
    [0] => T-Shirts
    [1] => Pants
)

更新

与您的代码集成：

$stack = array();
foreach ( $woocommerce->cart->get_cart() as $cart_item_key => $values ) {
    $_product = $values['data'];
    $category = $_product->get_categories();
    preg_match_all("`<[^>]+>([^<]+)</[^>]+>`", $category, $categories);
    foreach( $categories[1] as $cat) $stack[] = $cat;  // Could also use array_merge here
}

if( in_array( 'Pants', $stack ) ) echo 'We have pants';
else echo 'We do not have pants';

如果您不希望某个类别在 $stack 数组中出现多次：

$stack = array();
foreach ( $woocommerce->cart->get_cart() as $cart_item_key => $values ) {
    $_product = $values['data'];
    $category = $_product->get_categories();
    preg_match_all("`<[^>]+>([^<]+)</[^>]+>`", $category, $categories);
    foreach( $categories[1] as $cat) {
        if ( !in_array( $cat, $stack ) ) $stack[] = $cat;
    }
}

if( in_array( 'Pants', $stack ) ) echo 'We have pants';
else echo 'We do not have pants';
于 2013-08-30T19:32:15.713 回答