stristr

名稱:stristr

分類:字符串

所屬語言:php

一句話介紹:查找字符串在另一字符串中第一次出現的位置（大小寫不敏感）。

實例

例子1

查找"world" 在"Hello world!" 中的第一次出現，並返回字符串的剩餘部分：

 <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>

親自試一試

例子2

以"o" 的ASCII 值搜索字符串，並返回字符串的剩餘部分：

 <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>

親自試一試

例子2

返回"world" 第一次出現之前的字符串部分：

 <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>

親自試一試