＆＃39;没有结果＆＃39;消息不打印到屏幕

Question

此查询有效，但未显示“没有结果”＆＃39;信息。它应该是回声而不是第6行的退出吗？

<?php

    $key = $_GET['key'];
    $array = array();
    $con = mysql_connect("localhost","xxx","xxx");
    $db = mysql_select_db("xxx",$con);

    $query = mysql_query("select * FROM byartist2columns WHERE byartistnd LIKE '%{$key}%'");
    if( mysql_num_rows($query) == 0 ) exit( "No results" );
    while($row=mysql_fetch_assoc($query))
    {
        $array[] = $row['byartist'];
    }
    echo json_encode($array);

?>

JAVASCRIPT

<script> 
    $(document).ready(function() {
      $('input.typeahead').typeahead({
        name: 'typeahead',
        remote: 'r-search.php?key=%QUERY',
        limit: 150
      });
    });
</script>

Answer 1

更改条件如下。

if( mysql_num_rows($query) == 0 ) { $array[] = "No results"; }