PHP中去掉字符串首尾空格的方法_php技巧
第一种方法：通过php自带的函数
/*
trim 去除一个字符串两端空格，
rtrim 是去除一个字符串右部空格，
ltrim 是去除一个字符串左部空格。
*/
?>
echo trim(" 空格 ")."
";
echo rtrim(" 空格 ")."
";
echo ltrim(" 空格 ")."
";
?>
第二种方法：通过正则表达式替换，功能更强
php去除字符串首尾空格(包括全角）
$str=" 脚本之家 www.jb51.net ";
$str = mb_ereg_replace('^( | )+', '', $str);
$str = mb_ereg_replace('( | )+$', '', $str);
echo mb_ereg_replace(' ', "\n ", $str);
?>
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