首先分别解释下,
trim过滤字符串两端,
rtrim过滤字符串尾部,=chop()
ltrim过滤字符串首部.
过滤字符串中键的咚咚就只能用str_replace咯.
举个例子说明下,
php代码
复制代码 代码如下:
$str = '123,333,234,';
echo rtrim($str, ',');
rtrim实例代码2
复制代码 代码如下:
<?php
$text = "ttthese are a few words :) ... ";
$trimmed = rtrim($text);
// $trimmed = "ttthese are a few words :) ..."
$trimmed = rtrim($text, " t.");
// $trimmed = "ttthese 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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