strncmp

名稱:strncmp

分類:字符串

所屬語言:php

一句話介紹:前n 個字符的字符串比較（對大小寫敏感）。

實例

例子1

比較兩個字符串（區分大小寫）：

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token keyword">echo</span> <span class="token function">strncmp</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

比較兩個字符串（區分大小寫，China 和CHINA 輸出不相同）：

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token keyword">echo</span> <span class="token function">strncmp</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">strncmp</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>

親自試一試