删除最后一条记录逗号[重复]

Question

This question already has an answer here:

• how do i remove a comma off the end of a string? 10 answers

I want to remove the last record comma from fetched value. I used $album1 = substr($album,0,-1); to remove last character comma from the value `$ album'. I caught:

SyntaxError: Unexpected token ,'

Whats wrong with this in substr()?

$album = {"media_type":"image/png","pic_id":"zhadb"},
         {"media_type":"image/png","pic_id":"zhadb"},
         {"media_type":"image/video","pic_id":"kg5k4"},

while($fet_pic=mysql_fetch_array($albpic)) {  
    $album.=$fet_pic['CONTENT_VALUE'].',';
}

$album1 = substr($album,0,-1);

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Answer 1

you can uses trim to remove last comma from the string

like this

$album1 = trim($album, ',');