php的字符串用法小结

1 求长度，最基本的

$text = “sunny day”;

$count = strlen($text); // $count = 9

2 字符串截取
截取前多少个字符

$article = “breaking news: in ultimate irony, man bites dog.”; $summary = substr_replace($article, “…”, 40);

3 算单词数

$article = “breaking news: in ultimate irony, man bites dog.”; $wordcount = str_word_count($article);

// $wordcount = 8

4 将字符串变成html的连接
$url = “w.j. gilmore, llc (//www.jb51.net)”;

$url = preg_replace(“/http://([a-z0-9./-]+)/”, “$0”, $url);教资考试流程

5 去除字符中的html字符串
$text = strip_tags($input, ”

“);

6 nl2br:

$comme转念一想nt = nl2br($comment);

变成带html格式

7 wordwrap

限制每行字数

$speech = “four score and 有陪ven years ago our fathers brought forth, upon this continent, a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal.”;

echo wordwrap($speech, 30);

输出我是小学生手抄报：

four score and ven years ago our fathers brought forth, upon this continent, a new nation, conceived in l高中是义务教育吗iberty, and dedicated to the proposition that all men are created equal.