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<title>Get number of rows affected by a query</title>
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<div class="refnamediv">
<h1 class="refname">ifx_affected_rows</h1>
<p class="verinfo">(PHP 4, PHP <=5.2.0)</p><p class="refpurpose"><span class="refname">ifx_affected_rows</span> — <span class="dc-title">Get number of rows affected by a query</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.ifx-affected-rows-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">int</span> <span class="methodname"><strong>ifx_affected_rows</strong></span>
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$result_id</code></span>
)</div>
<p class="para rdfs-comment">
Returns the number of rows affected by a query associated with
<em><code class="parameter">result_id</code></em>.
</p>
<p class="para">
For inserts, updates and deletes the number is the real number
(sqlerrd[2]) of affected rows. For selects it is an estimate
(sqlerrd[0]). Don't rely on it. The database server can never
return the actual number of rows that will be returned by a
SELECT because it has not even begun fetching them at this stage
(just after the "PREPARE" when the optimizer has determined the
query plan).
</p>
<p class="para">
Useful after <span class="function"><a href="function.ifx-prepare.html" class="function">ifx_prepare()</a></span> to limit queries to
reasonable result sets.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.ifx-affected-rows-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">result_id</code></em></span>
<dd>
<p class="para">
A valid result id returned by <span class="function"><a href="function.ifx-query.html" class="function">ifx_query()</a></span> or
<span class="function"><a href="function.ifx-prepare.html" class="function">ifx_prepare()</a></span>.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.ifx-affected-rows-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the number of rows as an integer.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.ifx-affected-rows-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-1192">
<p><strong>Example #1 Informix affected rows</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$rid </span><span style="color: #007700">= </span><span style="color: #0000BB">ifx_prepare</span><span style="color: #007700">(</span><span style="color: #DD0000">"select * from emp<br /> where name like " </span><span style="color: #007700">. </span><span style="color: #0000BB">$name</span><span style="color: #007700">, </span><span style="color: #0000BB">$connid</span><span style="color: #007700">);<br />if (! </span><span style="color: #0000BB">$rid</span><span style="color: #007700">) {<br /> </span><span style="color: #FF8000">/* ... error ... */<br /></span><span style="color: #007700">}<br /></span><span style="color: #0000BB">$rowcount </span><span style="color: #007700">= </span><span style="color: #0000BB">ifx_affected_rows</span><span style="color: #007700">(</span><span style="color: #0000BB">$rid</span><span style="color: #007700">);<br />if (</span><span style="color: #0000BB">$rowcount </span><span style="color: #007700">> </span><span style="color: #0000BB">1000</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">printf </span><span style="color: #007700">(</span><span style="color: #DD0000">"Too many rows in result set (%d)\n<br />"</span><span style="color: #007700">, </span><span style="color: #0000BB">$rowcount</span><span style="color: #007700">);<br /> die (</span><span style="color: #DD0000">"Please restrict your query<br />\n"</span><span style="color: #007700">);<br />}<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.ifx-affected-rows-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.ifx-num-rows.html" class="function" rel="rdfs-seeAlso">ifx_num_rows()</a> - Count the rows already fetched from a query</span></li>
</ul>
</p>
</div>
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