【转】PHP去除换行符与PHP_EOL变量的使用
关于\n,\r,\t?
\n 软回车:?在Windows 中表示换行且回到下一行的最开始位置 ,在Linux、unix 中只表示换行,但不会回到下一行的开始位置。?
\r 软空格:?在Linux、unix 中表示返回到当行的最开始位置。?在Mac OS 中表示换行且返回到下一行的最开始位置,相当于Windows 里的 \n 的效果。?
\t 跳格(移至下一列)?
几点说明:?
- 它们在双引号或定界符表示的字符串中有效,在单引号表示的字符串中无效。?
- \r\n 一般一起用,用来表示键盘上的回车键(Linux,Unix中),也可只用 \n(Windwos中),在Mac OS中用\r表示回车。
- \t表示键盘上的“TAB”键。?
- 文件中的换行符号:windows : \n,linux,unix: \r\n
//php 不同系统的换行 //不同系统之间换行的实现是不一样的 //linux 与unix中用 /n //MAC 用 /r //window 为了体现与linux不同 则是 /r/n //所以在不同平台上 实现方法就不一样 //php 有三种方法来解决 //1、使用str_replace 来替换换行 $str = str_replace(array("/r/n", "/r", "/n"), "", $str); //2、使用正则替换 $str = preg_replace('//s*/', '', $str); //3、使用php定义好的变量 (建议使用) $str = str_replace(PHP_EOL, '', $str);
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????? PHP_EOL(end of line)是一个些已经定义好的变量,代表php的换行符,这个变量会根据平台而变,在windows下会是/r/n,在linux下是/n,在mac下是/r.换行就按下面的就可以了。
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$str = str_replace(PHP_EOL, '', $str);
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本文转自:http://www.nowamagic.net/librarys/veda/detail/1276
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