很简单：
function myfunction($products, $field, $value){ foreach($products as $key => $product) { if ( $product[$field] === $value ) return $key; } return false;}
很简单：
function myfunction($products, $field, $value){ foreach($products as $key => $product) { if ( $product[$field] === $value ) return $key; } return false;}名师互学网 版权所有 (c)2021-2022 ICP备案号：晋ICP备2021003244-6号
