stristr

名称:stristr

分类:字符串

所属语言:php

一句话介绍:查找字符串在另一字符串中第一次出现的位置（大小写不敏感）。

实例

例子 1

查找 "world" 在 "Hello world!" 中的第一次出现，并返回字符串的剩余部分：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token keyword">echo</span> <span class="token function">stristr</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"Hello world!"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"WORLD"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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例子 2

以 "o" 的 ASCII 值搜索字符串，并返回字符串的剩余部分：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token keyword">echo</span> <span class="token function">stristr</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"Hello world!"</span><span class="token punctuation">,</span><span class="token number">111</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

亲自试一试

例子 2

返回 "world" 第一次出现之前的字符串部分：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token keyword">echo</span> <span class="token function">stristr</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"Hello world!"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"WORLD"</span><span class="token punctuation">,</span><span class="token constant boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

亲自试一试