本文介绍了PHP rtrim和ltrim的修剪比预期的要多的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想从我的网站页面上删除Search -
.这是我下面的代码示例:
Im wanting to remove the Search -
from a page on my website. Here is an example of my code below:
输入:
$search = "Search - echelon";
$trim = "Search - ";
$result = ltrim($search,$trim);
echo $result;
输出:
lon
需求输出:
echelon
我该怎么做?为什么在上面的示例中ltrim会减少更多?谢谢!
How can I do this, and why does ltrim trim off more in my example above? Thanks!
推荐答案
RTM .第二个参数被视为要修剪的一组字符.
RTM. The second argument is treated as a set of characters to trim.
在这种情况下:
S - in the list, trim it
e - in the list, trim it
a - in the list, trim it
r - in the list, trim it
c - in the list, trim it
h - in the list, trim it
_ - (space) in the list, trim it
- - in the list, trim it
_ - (space) in the list, trim it
e - in the list, trim it
c - in the list, trim it
h - in the list, trim it
e - in the list, trim it
l - NOT in the list, stop!
lon is left
你是这个意思吗?
$result = substr($search,strlen($trim));
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