The first method: through the function that comes with php
<?php /* 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。 */ ?>
<?php echo trim(" 空格 ")."<br>"; echo rtrim(" 空格 ")."<br>"; echo ltrim(" 空格 ")."<br>"; ?>
The second method: through regular expression Formula replacement, more powerful
php removes spaces at the beginning and end of the string (including full-width)
<? $str=" php中文网 "; $str = mb_ereg_replace('^( | )+', '', $str); $str = mb_ereg_replace('( | )+$', '', $str); echo mb_ereg_replace(' ', "\n ", $str); ?>
Recommended tutorial: PHP video tutorial
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