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<h1 class="refname">mysql_data_seek</h1>
<p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">mysql_data_seek</span> — <span class="dc-title">Move internal result pointer</span></p>
</div>
<div id="function.mysql-data-seek-refsynopsisdiv">
<div class="warning"><strong class="warning">Warning</strong>
<p class="para">This extension is deprecated as of PHP 5.5.0, and will be removed in the future.
Instead, the <a href="book.mysqli.html" class="link">MySQLi</a> or <a href="ref.pdo-mysql.html" class="link">PDO_MySQL</a> extension should be used.
See also <a href="mysqlinfo.api.choosing.html" class="link">MySQL: choosing an API</a> guide and
<a href="faq.databases.html#faq.databases.mysql.deprecated" class="link">related FAQ</a> for more information.
Alternatives to this function include:</p>
<ul class="simplelist">
<li class="member"> <span class="function"><a href="mysqli-result.data-seek.html" class="function">mysqli_data_seek()</a></span></li>
<li class="member"><strong><code>PDO::FETCH_ORI_ABS</code></strong></li>
</ul>
</div>
</div>
<div class="refsect1 description" id="refsect1-function.mysql-data-seek-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>mysql_data_seek</strong></span>
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$result</code></span>
, <span class="methodparam"><span class="type">int</span> <code class="parameter">$row_number</code></span>
)</div>
<p class="para rdfs-comment">
<span class="function"><strong>mysql_data_seek()</strong></span> moves the internal row
pointer of the MySQL result associated with the specified result
identifier to point to the specified row number. The next call
to a MySQL fetch function, such as <span class="function"><a href="function.mysql-fetch-assoc.html" class="function">mysql_fetch_assoc()</a></span>,
would return that row.
</p>
<p class="para">
<em><code class="parameter">row_number</code></em> starts at 0. The
<em><code class="parameter">row_number</code></em> should be a value in the range from 0 to
<span class="function"><a href="function.mysql-num-rows.html" class="function">mysql_num_rows()</a></span> - 1. However if the result set
is empty ( <span class="function"><a href="function.mysql-num-rows.html" class="function">mysql_num_rows()</a></span> == 0), a seek to 0 will
fail with a <a href="" class="link">E_WARNING</a> and
<span class="function"><strong>mysql_data_seek()</strong></span> will return <strong><code>FALSE</code></strong>.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.mysql-data-seek-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">
result</code></em></span><dd>
<p class="para">The result <span class="type"><a href="language.types.resource.html" class="type resource">resource</a></span> that
is being evaluated. This result comes from a call to
<span class="function"><a href="function.mysql-query.html" class="function">mysql_query()</a></span>.</p></dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">row_number</code></em></span>
<dd>
<p class="para">
The desired row number of the new result pointer.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.mysql-data-seek-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> on success or <strong><code>FALSE</code></strong> on failure.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.mysql-data-seek-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-1572">
<p><strong>Example #1 <span class="function"><strong>mysql_data_seek()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$link </span><span style="color: #007700">= </span><span style="color: #0000BB">mysql_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'localhost'</span><span style="color: #007700">, </span><span style="color: #DD0000">'mysql_user'</span><span style="color: #007700">, </span><span style="color: #DD0000">'mysql_password'</span><span style="color: #007700">);<br />if (!</span><span style="color: #0000BB">$link</span><span style="color: #007700">) {<br /> die(</span><span style="color: #DD0000">'Could not connect: ' </span><span style="color: #007700">. </span><span style="color: #0000BB">mysql_error</span><span style="color: #007700">());<br />}<br /></span><span style="color: #0000BB">$db_selected </span><span style="color: #007700">= </span><span style="color: #0000BB">mysql_select_db</span><span style="color: #007700">(</span><span style="color: #DD0000">'sample_db'</span><span style="color: #007700">);<br />if (!</span><span style="color: #0000BB">$db_selected</span><span style="color: #007700">) {<br /> die(</span><span style="color: #DD0000">'Could not select database: ' </span><span style="color: #007700">. </span><span style="color: #0000BB">mysql_error</span><span style="color: #007700">());<br />}<br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">'SELECT last_name, first_name FROM friends'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">mysql_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br />if (!</span><span style="color: #0000BB">$result</span><span style="color: #007700">) {<br /> die(</span><span style="color: #DD0000">'Query failed: ' </span><span style="color: #007700">. </span><span style="color: #0000BB">mysql_error</span><span style="color: #007700">());<br />}<br /></span><span style="color: #FF8000">/* fetch rows in reverse order */<br /></span><span style="color: #007700">for (</span><span style="color: #0000BB">$i </span><span style="color: #007700">= </span><span style="color: #0000BB">mysql_num_rows</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">) - </span><span style="color: #0000BB">1</span><span style="color: #007700">; </span><span style="color: #0000BB">$i </span><span style="color: #007700">>= </span><span style="color: #0000BB">0</span><span style="color: #007700">; </span><span style="color: #0000BB">$i</span><span style="color: #007700">--) {<br /> if (!</span><span style="color: #0000BB">mysql_data_seek</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">, </span><span style="color: #0000BB">$i</span><span style="color: #007700">)) {<br /> echo </span><span style="color: #DD0000">"Cannot seek to row </span><span style="color: #0000BB">$i</span><span style="color: #DD0000">: " </span><span style="color: #007700">. </span><span style="color: #0000BB">mysql_error</span><span style="color: #007700">() . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /> continue;<br /> }<br /><br /> if (!(</span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">mysql_fetch_assoc</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">))) {<br /> continue;<br /> }<br /><br /> echo </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'last_name'</span><span style="color: #007700">] . </span><span style="color: #DD0000">' ' </span><span style="color: #007700">. </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'first_name'</span><span style="color: #007700">] . </span><span style="color: #DD0000">"<br />\n"</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">mysql_free_result</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
</div>
<div class="refsect1 notes" id="refsect1-function.mysql-data-seek-notes">
<h3 class="title">Notes</h3>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
The function <span class="function"><strong>mysql_data_seek()</strong></span> can be used in
conjunction only with <span class="function"><a href="function.mysql-query.html" class="function">mysql_query()</a></span>, not with
<span class="function"><a href="function.mysql-unbuffered-query.html" class="function">mysql_unbuffered_query()</a></span>.
</p>
</p></blockquote>
</div>
<div class="refsect1 seealso" id="refsect1-function.mysql-data-seek-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.mysql-query.html" class="function" rel="rdfs-seeAlso">mysql_query()</a> - Send a MySQL query</span></li>
<li class="member"> <span class="function"><a href="function.mysql-num-rows.html" class="function" rel="rdfs-seeAlso">mysql_num_rows()</a> - Get number of rows in result</span></li>
<li class="member"> <span class="function"><a href="function.mysql-fetch-row.html" class="function" rel="rdfs-seeAlso">mysql_fetch_row()</a> - Get a result row as an enumerated array</span></li>
<li class="member"> <span class="function"><a href="function.mysql-fetch-assoc.html" class="function" rel="rdfs-seeAlso">mysql_fetch_assoc()</a> - Fetch a result row as an associative array</span></li>
<li class="member"> <span class="function"><a href="function.mysql-fetch-array.html" class="function" rel="rdfs-seeAlso">mysql_fetch_array()</a> - Fetch a result row as an associative array, a numeric array, or both</span></li>
<li class="member"> <span class="function"><a href="function.mysql-fetch-object.html" class="function" rel="rdfs-seeAlso">mysql_fetch_object()</a> - Fetch a result row as an object</span></li>
</ul>
</p>
</div>
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