Question

我想添加文字'没有记录，请再试一次'来搜索没有任何内容的搜索。请注意，我是初学者，我的代码如下：

<?php
if (!empty($_REQUEST['term'])) {
    $term = mysql_real_escape_string($_REQUEST['term']);     
    $sql = "SELECT * FROM search WHERE surname LIKE '%".$term."%' ORDER BY surname, fullname, conflictsort"; 
    $r_query = mysql_query($sql);

    while ($row = mysql_fetch_array($r_query)){
        $id = $row['id'];
        $initial = $row['initial'];
        $surname = $row['surname'];
        $fullname = $row['fullname'];
        $dob = $row['dob'];
        $born = $row['born'];
        $service = $row['service'];
        $enlisteddate = $row['enlisteddate'];
        $enlisted = $row['enlisted'];
        $number = $row['number'];
        $rank = $row['rank'];
        $batt = $row['batt'];
        $unit = $row['unit'];
        $section = $row['section'];
        $died = $row['died'];
        $death = $row['death'];
        $memorial = $row['memorial'];
        $conflict = $row['conflict'];
        $conflictsort = $row['conflictsort'];
        $biography = $row['biography'];
        $link = $row['link'];

        echo"<h4>$surname</h4>
        <b>Name:</b> $fullname - <b>Rank:</b> $rank ($number) - <b>Regiment:</b> $batt $unit $section
        <br /><b>Birth:</b> $dob $born
        <br /><b>Enlisted:</b> $service - $enlisteddate $enlisted
        <br /><b>Died:</b> $died $death
        <br /><b>Memorial:</b> Shown as $initial$surname at $memorial
        <br /><b>Confilct:</b> $conflict
        <br /><b><a href='$link'>$biography</a></b>
        <br /><br /><br />";
    }  
}

＆GT;

Answer 1

使用mysql_num_rows()函数检查SELECT查询返回的行数，并相应地显示结果。

// your code
$r_query = mysql_query($sql);
if(mysql_num_rows($r_query)){
    while ($row = mysql_fetch_array($r_query)){
        // your code
    }
}else{
    echo "no records, please try again";
}

Sidenote ：不要使用mysql_*函数，从PHP 5.5开始不推荐使用它们，并在PHP 7.0中完全删除它们。请改用mysqli或pdo。 And this is why you shouldn't use mysql_* functions。

在mysql php页面上显示搜索结果的“无记录”

1 个答案: