php - 语法错误，意外的 '&&' (T_BOOLEAN_AND)

Question

我想知道这段代码有什么问题：

if ( isset( $_POST['add-to-cart'] ) ) && $matched_id = (int) $_POST['add-to-cart'] ) {            
      $url = 'https://website.com/cart/?add-to-cart=363053'; 
    }

它返回了一个语法错误，意外的 '&&' (T_BOOLEAN_AND)

标签： phpwordpresswoocommerce

Answer 1

你错过了一些括号...

尝试添加括号，如：

if ( (isset( $_POST['add-to-cart'])) && ($matched_id = (int) $_POST['add-to-cart']) ) {            
  $url = 'https://website.com/cart/?add-to-cart=363053'; 
}else{
    echo "Error";
}

或删除一些括号，如：

if ( isset( $_POST['add-to-cart'] )  && $matched_id = (int) $_POST['add-to-cart'] ) {            
  $url = 'https://website.com/cart/?add-to-cart=363053'; 
}else{
    echo "Error";
}

从我在问题修复时给出的示例中删除以下部分...

else{
    echo "Error";
}