在数组的最后一个元素上删除逗号

Question

我有一个循环音乐曲目的数组,但我需要从数组的最后一个元素中删除逗号,有人可以帮忙吗？

<?php foreach ($bucket_contents as $file){ $fname = $file['name']; $furl = "http://".$isdHtml5Bucket.".s3.amazonaws.com/".urlencode($fname);

if(preg_match("/\.mp3$/i", $furl)) { ?>
    {
            name:"<?php echo basename($fname); ?>",
            mp3:"<?php echo $furl; ?>"

        },
<?php }else{ ?>
        {
            name:"<?php echo basename($fname); ?>",
            m4a:"<?php echo $furl; ?>"

        },<?php } } ?>

这是数组的输出.

    {
        name:"bassline",
        m4a:"http://suyssamuelarawaeast.s3.amazonaws.com/warehouse%2Fbassline%2F"

    },
    {
        name:"Project Bassline - Drop The Pressure (Jack Beats Rinsed Out Remix).mp3",
        mp3:"http://suyssamuelarawaeast.s3.amazonaws.com/warehouse%2Fbassline%2FProject+Bassline+-+Drop+The+Pressure+%28Jack+Beats+Rinsed+Out+Remix%29.mp3"

    },
        {
        name:"deadmau5 vs jelo   the reward is cheese.mp3",
        mp3:"http://suyssamuelarawaeast.s3.amazonaws.com/warehouse%2Fdeadmau5+vs+jelo+++the+reward+is+cheese.mp3"

    },
    {
        name:"vocal",
        m4a:"http://suyssamuelarawaeast.s3.amazonaws.com/warehouse%2Fvocal%2F"

    },      
            {
        name:"Thin Ice",
        free:true,
        mp3:"http://www.jplayer.org/audio/mp3/Miaow-10-Thin-ice.mp3",
        oga:"http://www.jplayer.org/audio/ogg/Miaow-10-Thin-ice.ogg"
    },

如果滚动到数组的最后一个元素,则可以看到输出的逗号.我真的需要从数组的最后一个元素中删除这个逗号.

谢谢

Answer 1

传递你的字符串rtrim()并将charlist中的逗号指定为可移动字符:

$str = rtrim($str, ',');

编辑

或者......也许这种方法(未经测试):

$songs = array();

foreach ($bucket_contents as $file) { 

    $fname = $file['name'];
    $furl  = "http://".$isdHtml5Bucket.".s3.amazonaws.com/".urlencode($fname);

    $type = preg_match("/\.mp3$/i", $furl) ? 'mp3' : 'm4a'; 
    $songs[] = sprintf('{ name: %s, %s: %s }', $fname, $type, $furi); 
}

echo implode(',', $songs);