(PHP 4, PHP 5, PHP 7)
rtrim — 删锟斤拷锟街凤拷锟斤拷末锟剿的空帮拷锟街凤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟街凤拷锟斤拷
$str
[, string $character_mask
] ) : string
锟矫猴拷锟斤拷删锟斤拷 str 末锟剿的空帮拷锟街凤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟街凤拷锟斤拷锟斤拷锟斤拷锟截★拷
锟斤拷使锟矫第讹拷锟斤拷锟斤拷锟斤拷锟斤拷rtrim() 锟斤拷删锟斤拷锟斤拷锟斤拷锟街凤拷锟斤拷
str锟斤拷锟斤拷锟街凤拷锟斤拷锟斤拷
character_mask
通锟斤拷指锟斤拷 character_mask锟斤拷锟斤拷锟斤拷指锟斤拷锟斤拷要删锟斤拷锟斤拷锟街凤拷锟叫憋拷锟津单碉拷锟叫筹拷锟斤拷锟斤拷要删锟斤拷锟斤拷全锟斤拷锟街凤拷锟斤拷使锟斤拷 .. 锟斤拷式锟斤拷锟斤拷锟斤拷指锟斤拷一锟斤拷锟斤拷围锟斤拷
锟斤拷锟截改憋拷锟斤拷锟街凤拷锟斤拷锟斤拷
Example #1 rtrim() 使锟矫凤拷锟斤拷
<?php
$text = "\t\tThese are a few words :) ... ";
$binary = "\x09Example string\x0A";
$hello = "Hello World";
var_dump($text, $binary, $hello);
print "\n";
$trimmed = rtrim($text);
var_dump($trimmed);
$trimmed = rtrim($text, " \t.");
var_dump($trimmed);
$trimmed = rtrim($hello, "Hdle");
var_dump($trimmed);
// 删锟斤拷 $binary 末锟剿碉拷 ASCII 锟斤拷锟斤拷锟斤拷址锟�
// (锟斤拷锟斤拷 0 - 31)
$clean = rtrim($binary, "\x00..\x1F");
var_dump($clean);
?>
锟斤拷锟斤拷锟斤拷锟教伙拷锟斤拷锟斤拷锟�
string(32) " These are a few words :) ... " string(16) " Example string " string(11) "Hello World" string(30) " These are a few words :) ..." string(26) " These are a few words :)" string(9) "Hello Wor" string(15) " Example string"