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<title>Get the number of fields in a result</title>
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<div class="refnamediv">
<h1 class="refname">maxdb_num_fields</h1>
<h1 class="refname">maxdb_result::field_count</h1>
<p class="verinfo">(PECL maxdb >= 1.0)</p><p class="refpurpose"><span class="refname">maxdb_num_fields</span> -- <span class="refname">maxdb_result::field_count</span> — <span class="dc-title">Get the number of fields in a result</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.maxdb-num-fields-description">
<h3 class="title">Description</h3>
<p class="para">Procedural style</p>
<div class="methodsynopsis dc-description">
<span class="type">int</span> <span class="methodname"><strong>maxdb_num_fields</strong></span>
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$result</code></span>
)</div>
<p class="para rdfs-comment">Object oriented style</p>
<div class="fieldsynopsis"><span class="type">int</span> <var class="varname">$maxdb_result->field_count</var>;</div>
<p class="para">
<span class="function"><strong>maxdb_num_fields()</strong></span> returns the number of fields from specified result set.
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.maxdb-num-fields-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">The number of fields from a result set</p>
</div>
<div class="refsect1 examples" id="refsect1-function.maxdb-num-fields-examples">
<h3 class="title">Examples</h3>
<div class="example" id="example-1293">
<p><strong>Example #1 Object oriented style</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$maxdb </span><span style="color: #007700">= new </span><span style="color: #0000BB">maxdb</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"MONA"</span><span style="color: #007700">, </span><span style="color: #DD0000">"RED"</span><span style="color: #007700">, </span><span style="color: #DD0000">"DEMODB"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* check connection */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">maxdb_connect_errno</span><span style="color: #007700">()) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect failed: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">maxdb_connect_error</span><span style="color: #007700">());<br /> exit();<br />}<br /><br />if (</span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SELECT * FROM hotel.city ORDER BY zip"</span><span style="color: #007700">)) {<br /><br /> </span><span style="color: #FF8000">/* determine number of fields in result set */<br /> </span><span style="color: #0000BB">$field_cnt </span><span style="color: #007700">= </span><span style="color: #0000BB">$result</span><span style="color: #007700">-></span><span style="color: #0000BB">field_count</span><span style="color: #007700">;<br /><br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Result set has %d fields.\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$field_cnt</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">/* close result set */<br /> </span><span style="color: #0000BB">$result</span><span style="color: #007700">-></span><span style="color: #0000BB">close</span><span style="color: #007700">();<br />}<br /><br /></span><span style="color: #FF8000">/* close connection */<br /></span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">close</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
<div class="example" id="example-1294">
<p><strong>Example #2 Procedural style</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$link </span><span style="color: #007700">= </span><span style="color: #0000BB">maxdb_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"MONA"</span><span style="color: #007700">, </span><span style="color: #DD0000">"RED"</span><span style="color: #007700">, </span><span style="color: #DD0000">"DEMODB"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* check connection */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">maxdb_connect_errno</span><span style="color: #007700">()) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect failed: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">maxdb_connect_error</span><span style="color: #007700">());<br /> exit();<br />}<br /><br />if (</span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">maxdb_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #DD0000">"SELECT * FROM hotel.city ORDER BY zip"</span><span style="color: #007700">)) {<br /><br /> </span><span style="color: #FF8000">/* determine number of fields in result set */<br /> </span><span style="color: #0000BB">$field_cnt </span><span style="color: #007700">= </span><span style="color: #0000BB">maxdb_num_fields</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Result set has %d fields.\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$field_cnt</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">/* close result set */<br /> </span><span style="color: #0000BB">maxdb_free_result</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #FF8000">/* close connection */<br /></span><span style="color: #0000BB">maxdb_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
<p class="para">The above example will output
something similar to:</p>
<div class="example-contents screen">
<div class="cdata"><pre>
Result set has 3 fields.
</pre></div>
</div>
</div>
<div class="refsect1 seealso" id="refsect1-function.maxdb-num-fields-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.maxdb-fetch-field.html" class="function" rel="rdfs-seeAlso">maxdb_fetch_field()</a> - Returns the next field in the result set</span></li>
</ul>
</p>
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