PHP去除回车换行符

preg_replace("'([\r\n])[\s]+'","",$content)//去除回车换行符

<?php

//$document应包含一个HTML文档。

//本例将去掉HTML标记，javascript代码

//和空白字符。还会将一些通用的

//HTML实体转换成相应的文本。

$search=array("'<script[^>]*?>.*?</script>'si",//去掉javascript

"'<[\/\!]*?[^<>]*?>'si",//去掉HTML标记

"'([\r\n])[\s]+'",//去掉空白字符

"'&(quot|#34);'i",//替换HTML实体

"'&(amp|#38);'i",

"'&(lt|#60);'i",

"'&(gt|#62);'i",

"'&(nbsp|#160);'i",

"'&(iexcl|#161);'i",

"'&(cent|#162);'i",

"'&(pound|#163);'i",

"'&(copy|#169);'i",

"'&#(\d+);'e");//作为PHP代码运行

$replace=array("",

"",

"\\1",

"\"",

"&",

"<",

">",

"",

chr(161),

chr(162),

chr(163),

chr(169),

"chr(\\1)");

$text=preg_replace($search,$replace,$document);

?>