将ereg_replace更改为等效的preg_replace [英] Changing ereg_replace to equivalent preg_replace

问题描述

可能的重复项:
如何在PHP中将ereg表达式转换为preg?

Possible Duplicates:
How can I convert ereg expressions to preg in PHP?

使用preg_replace等效于以下表达式是什么?

What is the equivalent using preg_replace to the following expression?

ereg_replace('^' . $g_lang_prefix, '', $t_var );

推荐答案

preg_replace('/^' . preg_quote($g_lang_prefix,'/') . '/', '', $t_var );

如果需要$g_lang_prefix作为通用正则表达式，则省略preg_quote

If you need $g_lang_prefix working as a common regex then omit preg_quote

preg_replace('/^' . $g_lang_prefix . '/', '', $t_var );

(非常明显)

如果您需要第二种解决方案，但您的$g_lang甚至可以包含此字符/，那么您至少需要对其进行转义:

Also if you need this second solution, but your $g_lang can contain even this char / then you need to escape at least it:

preg_replace('/^' . str_replace('/','\/',$g_lang_prefix) . '/', '', $t_var );

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