PHP Conditional基于数组中的任何项 - PHP Conditional based on any item within array

PHP Conditional based on any item within array

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

<?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print_r($stack)的输出可能是：Array（[0]=>Thanking[1]=>Poultry）

不管产品如何，我都需要运行这样的条件语句：

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

上面的条件只关注数组中的第二项，而不是全部。如何搜索数组中的所有项目？

$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单独的类别。in_array（）检查请求的值是否为数组中的ANYWHERE。

测试：

$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]);

收益率：

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';

如果你不想一个类别在$stack数组中出现不止一次：

$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';