preg_replace

名称:preg_replace

分类:正则处理PCRE

所属语言:php

一句话介绍:返回字符串，其中模式的匹配项被替换为给定字符串中的子字符串。

实例

使用不区分大小写的正则表达式，在字符串中将 "Microsoft" 替换为 "W3School"：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string single-quoted-string">'Visit Microsoft!'</span><span class="token punctuation">;</span>
<span class="token variable">$pattern</span> <span class="token operator">=</span> <span class="token string single-quoted-string">'/microsoft/i'</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">preg_replace</span><span class="token punctuation">(</span><span class="token variable">$pattern</span><span class="token punctuation">,</span> <span class="token string single-quoted-string">'W3School'</span><span class="token punctuation">,</span> <span class="token variable">$str</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

亲自试一试