sha1_file

Exemple

Exemple 1

Calculez le hachage SHA-1 du fichier texte "test.txt":

 <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">$ nom de fichier</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>

Sortie du code ci-dessus:

 aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d

Exemple 2

Stockage du hachage SHA-1 de "test.txt" dans le fichier:

 <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>

Testez si "test.txt" a été modifié (c'est-à-dire si Sha-1 a été modifié):

 <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">"Le fichier est OK."</span> <span class="token punctuation">;</span>
  <span class="token punctuation">}</span>
<span class="token keyword">autre</span>
  <span class="token punctuation">{</span>
  <span class="token keyword">Echo</span> <span class="token string double-quoted-string">"Le fichier a été modifié".</span> <span class="token punctuation">;</span>
  <span class="token punctuation">}</span>
<span class="token delimiter important">?></span></span>

Sortie du code ci-dessus:

 Le fichier est ok.