Source of: /manual/en/function.xdiff-string-rabdiff.php


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<div id="function.xdiff-string-rabdiff" class="refentry">

 <div class="refnamediv">

  <h1 class="refname">xdiff_string_rabdiff</h1>

  <p class="verinfo">(PECL xdiff &gt;= 0.2.0)</p><p class="refpurpose"><span class="refname">xdiff_string_rabdiff</span> &mdash; <span class="dc-title">Make binary diff of two strings using the Rabin&#039;s polynomial fingerprinting algorithm</span></p>



 </div>

 

 <a name="function.xdiff-string-rabdiff.description"></a><div class="refsect1 description">

  <h3 class="title">Description</h3>

  <div class="methodsynopsis dc-description">

   <span class="type">string</span> <span class="methodname"><a href="function.xdiff-string-bdiff.php" class="function">xdiff_string_bdiff</a></span>

    ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$old_data</tt></span>

   , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$new_data</tt></span>

   )</div>



  <p class="para rdfs-comment">

   Makes a binary diff of two strings and returns the result.

   The difference between this function and <a href="function.xdiff-string-bdiff.php" class="function">xdiff_string_bdiff()</a> is different

   algorithm used which should result in faster execution and smaller diff produced.

   This function works with both text and binary data. Resulting patch

   can be later applied using <a href="function.xdiff-string-bpatch.php" class="function">xdiff_string_bpatch()</a>/<a href="function.xdiff-file-bpatch.php" class="function">xdiff_file_bpatch()</a>.

  </p>

  <p class="para">

   For more details about differences between algorithm used please check <a href="http://www.xmailserver.org/xdiff-lib.html" class="link external">&raquo; libxdiff</a> 

   website.

  </p>

 </div>





 <a name="function.xdiff-string-rabdiff.parameters"></a><div class="refsect1 parameters">

  <h3 class="title">Parameters</h3>

  <p class="para">

   </p><dl>



    <dt class="varlistentry">



     <span class="term"><i><tt class="parameter">old_data</tt></i>

</span>



     </dt><dd class="listitem">



      <p class="para">

       First string with binary data. It acts as &quot;old&quot; data.

      </p>

     </dd>



    

    <dt class="varlistentry">



     <span class="term"><i><tt class="parameter">new_data</tt></i>

</span>



     </dt><dd class="listitem">



      <p class="para">

       Second string with binary data. It acts as &quot;new&quot; data.

      </p>

     </dd>



    

   </dl>

<p>

  </p>

 </div>





 <a name="function.xdiff-string-rabdiff.returnvalues"></a><div class="refsect1 returnvalues">

  <h3 class="title">Return Values</h3>

  <p class="para">

   Returns string with binary diff containing differences between &quot;old&quot; and &quot;new&quot;

   data or <b><tt class="constant">FALSE</tt></b> if an internal error occurred.

  </p>

 </div>





 <a name="function.xdiff-string-rabdiff.seealso"></a><div class="refsect1 seealso">

  <h3 class="title">See Also</h3>

  <p class="para">

   </p><ul class="simplelist">

    <li class="member"><a href="function.xdiff-string-bpatch.php" class="function" rel="rdfs-seeAlso">xdiff_string_bpatch()</a> - Patch a string with a binary diff</li>

   </ul><p>

  </p>

 </div>





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Source of: /manual/en/function.xdiff-string-rabdiff.php
