求正则匹配tab, t貌似也会匹配空格呢

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Release: 2016-06-23 14:02:58
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求正则匹配tab, \t貌似也会匹配空格呢


回复讨论(解决方案)

这么可能呢?分析如下

$s = ' 	'; //一个空格加一个制表符echo current(unpack('H*', $s)); //2009 20是空格的十六进制内码,09是Tab键的十六进制内码preg_match("/\t+/", $s, $r);echo current(unpack('H*', $r[0])); //得到 09preg_match("/ +/", $s, $r);echo current(unpack('H*', $r[0])); //得到 20preg_match("/\s+/", $s, $r);echo current(unpack('H*', $r[0])); //得到 2009
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我的编辑器错了,都是tab键,一个tab显示的距离只有空格的宽度,晕死

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