在PHP文件中添加IF语句

Question

我有下面的PHP文件，它工作得很好，所有的输出都显示出来了，但是我有IF语句的问题。我不知道为什么它显示了IF语句的所有文本和两行星号(字体很棒的图标).Why它发生了，有人能这么好地帮助我吗，我必须把IF放在哪里才能工作，？谢谢

<?php
include('database_connection.php');
if(isset($_POST["action"]))
{
 $query = "
  SELECT * FROM items  WHERE product_status = '1'
 ";
 if(isset($_POST["brands"]))
 {   
   $brand_filter = implode("','", $_POST["brands"]);
  $query .= "  AND product BETWEEN '400' AND '600' ";
 }

        
 $statement = $connect->prepare($query);
 $statement->execute();
 $result = $statement->fetchAll();
 $total_row = $statement->rowCount();
 $output = '';
 if($total_row > 0)
 {
  foreach($result as $row)
  {
     
   $output .= '
            <div class="col-sm-4 col-lg-3 col-md-3">
                <div style="border:1px solid #ccc; border-radius:5px; padding:16px; margin-bottom:16px; height:450px;">
                    
                    <p align="center"><strong><a href="#">'. $row['hotel_name'] .'</a></strong></p>
                    <h4 style="text-align:center;" class="text-danger" >'. $row['product_price'] .'</h4>
                     
                     if($row["rating"]==1)
                                    {
                                         <span class="fa fa-star checked"></span>
                                        <span class="fa fa-star"></span>
                                        <span class="fa fa-star"></span>
                                         <span class="fa fa-star"></span>
                                         <span class="fa fa-star"></span>
                                    }
                                    if($row["rating"]==2)
                                    {
                                         <span class="fa fa-star checked"></span>
                                         <span class="fa fa-star checked"></span>
                                         <span class="fa fa-star"></span>
                                         <span class="fa fa-star"></span>
                                         <span class="fa fa-star"></span>
                                    }
                </div>

            </div>
            ';
        }
    }
    else
    {
        $output = '<h3>No Data Found</h3>';
    }
    echo $output;
}

?>

Answer 1

if语句在字符串中，因此它不会作为if条件执行。您需要断开字符串并追加if条件值，然后回显最终的$outputinclude('database_connection.php')；

if (isset($_POST["action"])) {
    // db query
    $query = "SELECT * FROM items  WHERE product_status = '1' ";

    if (isset($_POST["brands"])) {
        $brand_filter = implode("','", $_POST["brands"]);
        $query .= "  AND product BETWEEN '400' AND '600' ";
    }


    $statement = $connect->prepare($query);
    $statement->execute();
    $result = $statement->fetchAll();
    $total_row = $statement->rowCount();

    $output = '';

    if ($total_row > 0) {
        foreach ($result as $row) {

            $rating_element = '';

            if ($row["rating"] == 1) {

                $rating_element = '<span class="fa fa-star checked"></span>
                                        <span class="fa fa-star"></span>
                                        <span class="fa fa-star"></span>
                                        <span class="fa fa-star"></span>
                                        <span class="fa fa-star"></span> ';
            }
            if ($row["rating"] == 2) {

                $rating_element = '<span class="fa fa-star checked" ></span >
                                         <span class="fa fa-star checked" ></span >
                                         <span class="fa fa-star" ></span >
                                         <span class="fa fa-star" ></span >
                                         <span class="fa fa-star" ></span >';
            }

            $output .= '<div class="col-sm-4 col-lg-3 col-md-3">
                <div style="border:1px solid #ccc; border-radius:5px; padding:16px; margin-bottom:16px; height:450px;">
                    
                    <p align="center"><strong><a href="#">' . $row['hotel_name'] . '</a></strong></p>
                    <h4 style="text-align:center;" class="text-danger" >' . $row['product_price'] . '</h4>
                  ' . $rating_element . '
                </div>

            </div>
            ';
        }
    } else {
        $output = '<h3>No Data Found</h3>';
    }
    echo $output;
}