php怎麼去除右邊的逗號

php去除右邊的逗號的方法：先建立一個PHP範例檔案；然後透過「rtrim($str, ',');」方法刪除字串中右邊的逗號即可。

本文操作環境：Windows7系統、PHP7.1版，DELL G3電腦

先分別解釋下,

trim過濾字串兩端,

rtrim過濾字串尾部,=chop()

ltrim過濾字串首部.

過濾字串中鍵的咚咚就只能用str_replace咯.

舉例說明下,

PHP程式碼

程式碼如下:

$str = '123,333,234,';
echo rtrim($str, ',');

rtrim實例程式碼2

#程式碼如下:

<?php
$text = "\t\tThese are a few words :) ...  ";
$trimmed = rtrim($text);
// $trimmed = "\t\tThese are a few words :) ..."
$trimmed = rtrim($text, " \t.");
// $trimmed = "\t\tThese are a few words :)"
$clean = rtrim($binary, "\x00..\x1F");
// trim the ASCII control characters at the end of $binary
// (from 0 to 31 inclusive)
?>

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