如何编写PHP代码实现按指定长度截取字符串并形成长尾词？
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本文共计157个文字，预计阅读时间需要1分钟。
php $length) { return substr($string, 0, $length - 3) . ...; } return $string;}?>
php按照指定长度截取字符串的代码，如果字符串超出了指定的长度，会用...替换，不过这段代码不支持中英文的区分
<?php //if a string is longer than the defined length, //it will add 3 periods to the end of the string. //you can change it to what ever you want for example: //return substr($str,0,$len).'[<a href="read_more.html">Read More</a>]'; //www.sharejs.com function strLength($str,$len){ $lenght = strlen($str); if($lenght > $len){ return substr($str,0,$len).'...'; }else{ return $str; } } $str = "This is a fairly long string."; //The fist part is the string, the second part is how long it can be echo strLength($str,10).'<br>'; echo strLength($str,30); ?>
本文共计157个文字，预计阅读时间需要1分钟。
php $length) { return substr($string, 0, $length - 3) . ...; } return $string;}?>
php按照指定长度截取字符串的代码，如果字符串超出了指定的长度，会用...替换，不过这段代码不支持中英文的区分
<?php //if a string is longer than the defined length, //it will add 3 periods to the end of the string. //you can change it to what ever you want for example: //return substr($str,0,$len).'[<a href="read_more.html">Read More</a>]'; //www.sharejs.com function strLength($str,$len){ $lenght = strlen($str); if($lenght > $len){ return substr($str,0,$len).'...'; }else{ return $str; } } $str = "This is a fairly long string."; //The fist part is the string, the second part is how long it can be echo strLength($str,10).'<br>'; echo strLength($str,30); ?>