I need to find a certain whitespace with regex. I need to find and replace whitespace or multiple whitespaces only if it s before or after a new line and the other whitespaces should remain.
Now i m using this to remove multiple whitespaces:
preg_replace( /s{2,}/ , , $string);
感谢。
Just use the m (multiline) modifier, so that and $compt/end of a line. 然后,你可以写这样的模式:
preg_replace( /^s+?|s+?$/m , , $string);
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