首先分別解釋下,

trim過濾字符串兩端,

rtrim過濾字符串尾部,=chop()

ltrim過濾字符串首部.

過濾字符串中鍵的咚咚就只能用str_replace咯.

舉個例子說明下,

PHP代碼

. 代碼如下:

$str = '123,333,234,';

echo rtrim($str, ',');

rtrim實例代碼2

. 代碼如下:

$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)

?>

總結

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