php - 用 Preg_replace 删除汉字？

Question

我正在尝试从字符串中删除中文字符。试过了，但无法正常工作。它说:

Warning: preg_replace() [function.preg-replace]: Compilation failed: character value in \x{...} sequence is too large at offset 9 in

preg_replace('/[^\x{4e00}-\x{9fa5}]+/', '', $string)

我怎样才能让它工作？

Answer 1

In UTF-8 mode, "\x{...}" is allowed, where the contents of the braces is a string of hexadecimal digits.

您似乎没有处于 UTF-8 模式。要启用此模式，请将 u 修饰符添加到正则表达式的末尾。