sha1

实例

例子 1

计算字符串 "Hello" 的 SHA-1 散列：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Shanghai"</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">sha1</span><span class="token punctuation">(</span><span class="token variable">$str</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

输出 sha1() 的结果：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Shanghai"</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"字符串："</span><span class="token operator">.</span><span class="token variable">$str</span><span class="token operator">.</span><span class="token string double-quoted-string">"<br>"</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"TRUE - 原始 20 字符二进制格式："</span><span class="token operator">.</span><span class="token function">sha1</span><span class="token punctuation">(</span><span class="token variable">$str</span><span class="token punctuation">,</span> <span class="token constant boolean">TRUE</span><span class="token punctuation">)</span><span class="token operator">.</span><span class="token string double-quoted-string">"<br>"</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"FALSE - 40 字符十六进制数："</span><span class="token operator">.</span><span class="token function">sha1</span><span class="token punctuation">(</span><span class="token variable">$str</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 delimiter important">?></span></span>

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例子 3

输出 sha1() 的结果并对其进行测试：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Shanghai"</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">sha1</span><span class="token punctuation">(</span><span class="token variable">$str</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token function">sha1</span><span class="token punctuation">(</span><span class="token variable">$str</span><span class="token punctuation">)</span> <span class="token operator">==</span> <span class="token string double-quoted-string">"b99463d58a5c8372e6adbdca867428961641cb51"</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>I love Shanghai!"</span><span class="token punctuation">;</span>
  <span class="token keyword">exit</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span>
<span class="token delimiter important">?></span></span>

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