strncasecmp

名称:strncasecmp

分类:字符串

所属语言:php

一句话介绍:前 n 个字符的字符串比较（对大小写不敏感）。

实例

例子 1

比较两个字符串（不区分大小写）：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token keyword">echo</span> <span class="token function">strncasecmp</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"I love China!"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"I love Shanghai!"</span><span class="token punctuation">,</span><span class="token number">6</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

比较两个字符串（不区分大小写，China 与 CHINA 输出相同）：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token keyword">echo</span> <span class="token function">strncasecmp</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"China"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"China"</span><span class="token punctuation">,</span><span class="token number">6</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"<br>"</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">strncasecmp</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"China"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"CHINA"</span><span class="token punctuation">,</span><span class="token number">6</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

亲自试一试