sha1_file

예

예 1

텍스트 파일 "test.txt"의 SHA-1 해시를 계산하십시오.

 <span class="token php language-php"><span class="token delimiter important"><? php</span>
<span class="token variable">$ filename</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"test.txt"</span> <span class="token punctuation">;</span>
<span class="token variable">$ sha1file</span> <span class="token operator">=</span> <span class="token function">sha1_file</span> <span class="token punctuation">(</span> <span class="token variable">$ filename</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token variable">$ sha1file</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

위 코드의 출력 :

 AAF4C61DDCC5E8A2DABEDE0F3B482CD9AEA9434D

예 2

파일에 "test.txt"의 SHA-1 해시 저장 :

 <span class="token php language-php"><span class="token delimiter important"><? php</span>
<span class="token variable">$ sha1file</span> <span class="token operator">=</span> <span class="token function">sha1_file</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"test.txt"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token function">file_put_contents</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"sha1file.txt"</span> <span class="token punctuation">,</span> <span class="token variable">$ sha1file</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

"test.txt"가 수정되었는지 여부를 테스트하십시오 (즉, SHA-1이 수정되었는지 여부) :

 <span class="token php language-php"><span class="token delimiter important"><? php</span>
<span class="token variable">$ sha1file</span> <span class="token operator">=</span> <span class="token function">file_get_contents</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"sha1file.txt"</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_file</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"test.txt"</span> <span class="token punctuation">)</span> <span class="token operator">==</span> <span class="token variable">$ SHA1File</span> <span class="token punctuation">)</span>
  <span class="token punctuation">{</span>
  <span class="token keyword">Echo</span> <span class="token string double-quoted-string">"파일은 괜찮습니다."</span> <span class="token punctuation">;</span>
  <span class="token punctuation">}</span>
<span class="token keyword">또 다른</span>
  <span class="token punctuation">{</span>
  <span class="token keyword">Echo</span> <span class="token string double-quoted-string">"파일이 변경되었습니다."</span> <span class="token punctuation">;</span>
  <span class="token punctuation">}</span>
<span class="token delimiter important">?></span></span>

위 코드의 출력 :

 파일은 괜찮습니다.