php 如果歌曲列表中存在歌曲

Question

正在制作一个 php 播放列表
其中一条记录包含多首歌曲，并用 #

分隔

我想看看是否有新歌

/music/David_Kersh/Another_You.mp4

存在于该行

/music/Abba/ABBA-When_I_Kissed_The_Teacher.mp4#/music/Aaron_Tippin/Aaron_Tippin\_-\__For_You_I_Will__Official_Video\_-\_Copy.mp4#

<?php
if (isset($_GET['song2']))
    {
    $song = $_GET['song2'];
    $band = $_GET['band2'];
    $playlist = $_GET['playlist']; //name of playlist
        $songPath = "/music/".$band."/".$song."#";
        $songPath2 = "/music/".$band."/".$song;//text version display
    $connection = mysql_connect("localhost","***","****");
        mysql_select_db("music")or die(mysql_error());
//Checks it Exists
$result = mysql_query("SELECT * FROM playlists WHERE path='$songPath'");

while ($row = mysql_fetch_assoc($result)) 
{
    $path = $row['path'];
   $find = explode("#",$path);
    foreach($find as $key)
    {      
          //  if(strcmp($key, $songPath2) == 0)
              if($key == $songPath2)
            {
             echo "<center>
             <BR><BR><h1>It Exists in <br><br>".$playlist."</H1>";
            }else
            {
            //if not exists Update that Playlist
            $result = mysql_query("UPDATE playlists SET path=CONCAT(COALESCE(`path`,' '),      '".$songPath."') WHERE name='".$playlist."'");
            while ($row = mysql_fetch_assoc($result))
            {}
            } 
    }
}//whileEnd   
}
?>

如果我刷新页面或再次重新输入，它会添加到播放列表，即使它已经存在

提前感谢

Answer 1

尝试下面的代码，这会起作用。也将 mysql 更改为 mysqli

 
<?php
if (isset($_GET['song2'])) {

    $song       = $_GET['song2'];
    $band       = $_GET['band2'];
    $playlist   = $_GET['playlist']; //name of playlist
    $songPath   = "/music/" . $band . "/" . $song . "#";
    // use only this to match all without #
    $songPath2  = "/music/" . $band . "/" . $song; //text version display

    $connection = mysqli_connect("localhost", "***", "****");
    mysqli_select_db("music") or die(mysql_error());

    //Checks it Exists
    $result = mysqli_query("SELECT * FROM playlists WHERE path like '%$songPath2%' ");

    while ($row = mysqli_fetch_assoc($result)) {

        $path = $row['path'];
        $find = explode("#", $path);

            if(in_array($songpath2,$find)) {
                echo "<center><BR><BR><h1>It Exists in <br><br>" . $playlist . "</H1>";
            } else {
                //if not exists Update that Playlist
                array_push($path,$songPath2);
                $update_songs= implode('#',$path);
                $rupdate = mysqli_query("UPDATE playlists SET path='$update_songs' WHERE name='" . $playlist . "'");

                $result = mysqli_query("SELECT * FROM playlists WHERE path like '%$songPath%' ");
                while ($row = mysql_fetch_assoc($result)) {}
            }

    } //whileEnd

}
?>