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When I was doing php today, I needed to remove the spaces at the beginning and end of the string. Baidu found out that php comes with this functiontrim. It is really much more convenient. I would like to share it
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 expressionreplacement, with stronger function
php Remove leading and trailing spaces from the string (including full-width spaces)
The code is as follows:
<? $str=" PHP中文网www.php.cn "; $str = mb_ereg_replace('^( | )+', '', $str); $str = mb_ereg_replace('( | )+$', '', $str); echo mb_ereg_replace(' ', "\n ", $str); ?>
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