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php和editplus正则表达式去除空白行_php技巧

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Release: 2016-05-16 20:17:27
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去除字符串内部的空行:

复制代码 代码如下:

$str = preg_replace("/(\s*?\r?\n\s*?)+/","\n",$str);

去除全部的空行,包括内部和头尾:
复制代码 代码如下:

$str = preg_replace('/($\s*$)|(^\s*^)/m', '',$str);

editplus中替换空白行的正则表达式:

正则表达式:^[\t\n ]*\n

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