chr

實例

例子1

從不同的ASCII 值返回字符：

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token keyword">echo</span> <span class="token function">chr</span> <span class="token punctuation">(</span> <span class="token number">61</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// 十進制</span>
<span class="token keyword">echo</span> <span class="token function">chr</span> <span class="token punctuation">(</span> <span class="token number">061</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// 八進制值</span>
<span class="token keyword">echo</span> <span class="token function">chr</span> <span class="token punctuation">(</span> <span class="token number">0x61</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// 十六進制值</span>
<span class="token delimiter important">?></span></span>

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例子2

使用八進制值046 來添加ASCII 字符：&。

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$str</span> <span class="token operator">=</span> <span class="token function">chr</span> <span class="token punctuation">(</span> <span class="token number">046</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"You <span class="token interpolation"><span class="token variable">$str</span></span> me forever!"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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例子3

使用十進制值43 和61 來添加ASCII 字符：+ 和=。

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$str</span> <span class="token operator">=</span> <span class="token function">chr</span> <span class="token punctuation">(</span> <span class="token number">43</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token variable">$str2</span> <span class="token operator">=</span> <span class="token function">chr</span> <span class="token punctuation">(</span> <span class="token number">61</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"2 <span class="token interpolation"><span class="token variable">$str</span></span> 2 <span class="token interpolation"><span class="token variable">$str2</span></span> 4"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

親自試一試