PHP 删除字符串中的一个字符
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PHP removing a character in a string
提问by Zero Cool
My php is weak and I'm trying to change this string:
我的 php 很弱，我正在尝试更改此字符串：
http://www.example.com/backend.php?/c=crud&m=index&t=care
^
to be:
成为：
http://www.example.com/backend.php?c=crud&m=index&t=care
^
removing the /after the backend.php?. Any ideas on the best way to do this?
取出/后backend.php?。关于做到这一点的最佳方法的任何想法？
Thanks!
谢谢！
回答by CMS
I think that it's better to use simply str_replace, like the manual says:
我认为最好使用简单的str_replace，就像手册上说的：
If you don't need fancy replacing rules (like regular expressions), you should always use this function instead of ereg_replace() or preg_replace().
如果您不需要花哨的替换规则（如正则表达式），则应始终使用此函数而不是 ereg_replace() 或 preg_replace()。
<?
$badUrl = "http://www.site.com/backend.php?/c=crud&m=index&t=care";
$goodUrl = str_replace('?/', '?', $badUrl);
回答by eyelidlessness
$str = preg_replace('/\?\//', '?', $str);
Edit: See CMS' answer. It's late, I should know better.
编辑：请参阅 CMS 的回答。晚了，我应该知道的更好。
回答by Henrik Paul
While a regexp would suit here just fine, I'll present you with an alternative method. It mightbe a tad faster than the equivalent regexp, but life's all about choices (...or something).
虽然正则表达式在这里很适合，但我将向您展示另一种方法。它可能比等效的正则表达式快一点，但生活就是选择（......或其他东西）。
$length = strlen($urlString);
for ($i=0; $i<$length; i++) {
if ($urlString[$i] === '?') {
$urlString[$i+1] = '';
break;
}
}
Weird, I know.
很奇怪，我知道。
回答by nickf
$splitPos = strpos($url, "?/");
if ($splitPos !== false) {
$url = substr($url, 0, $splitPos) . "?" . substr($url, $splitPos + 2);
}
