<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Gets the number of rows in a result</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.maxdb-num-fields.html">maxdb_num_fields</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.maxdb-options.html">maxdb_options</a></div> <div class="up"><a href="ref.maxdb.html">MaxDB Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.maxdb-num-rows" class="refentry"> <div class="refnamediv"> <h1 class="refname">maxdb_num_rows</h1> <h1 class="refname">maxdb::num_rows</h1> <p class="verinfo">(PECL maxdb >= 1.0)</p><p class="refpurpose"><span class="refname">maxdb_num_rows</span> -- <span class="refname">maxdb::num_rows</span> — <span class="dc-title">Gets the number of rows in a result</span></p> </div> <div class="refsect1 description" id="refsect1-function.maxdb-num-rows-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_rows</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->num_rows</var>;</div> <p class="para"> Returns the number of rows in the result set. </p> <p class="para"> The use of <span class="function"><strong>maxdb_num_rows()</strong></span> depends on whether you use buffered or unbuffered result sets. In case you use unbuffered resultsets <span class="function"><strong>maxdb_num_rows()</strong></span> will not correct the correct number of rows until all the rows in the result have been retrieved. </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.maxdb-num-rows-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns number of rows in the result set. </p> <blockquote class="note"><p><strong class="note">Note</strong>: <p class="para"> If the number of rows is greater than maximal int value, the number will be returned as a string. </p> </p></blockquote> </div> <div class="refsect1 examples" id="refsect1-function.maxdb-num-rows-examples"> <h3 class="title">Examples</h3> <div class="example" id="example-1295"> <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">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SELECT cno, name FROM hotel.customer ORDER BY name"</span><span style="color: #007700">)) {<br /><br /> </span><span style="color: #FF8000">/* determine number of rows result set */<br /> </span><span style="color: #0000BB">$row_cnt </span><span style="color: #007700">= </span><span style="color: #0000BB">$result</span><span style="color: #007700">-></span><span style="color: #0000BB">num_rows</span><span style="color: #007700">;<br /><br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Result set has %d rows.\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$row_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-1296"> <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">$link</span><span style="color: #007700">, </span><span style="color: #DD0000">"SELECT cno, name FROM hotel.customer ORDER BY name"</span><span style="color: #007700">)) {<br /><br /> </span><span style="color: #FF8000">/* determine number of rows result set */<br /> </span><span style="color: #0000BB">$row_cnt </span><span style="color: #007700">= </span><span style="color: #0000BB">maxdb_num_rows</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Result set has %d rows.\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$row_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 15 rows. </pre></div> </div> </div> <div class="refsect1 seealso" id="refsect1-function.maxdb-num-rows-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="function"><a href="function.maxdb-affected-rows.html" class="function" rel="rdfs-seeAlso">maxdb_affected_rows()</a> - Gets the number of affected rows in a previous MaxDB operation</span></li> <li class="member"> <span class="function"><a href="function.maxdb-store-result.html" class="function" rel="rdfs-seeAlso">maxdb_store_result()</a> - Transfers a result set from the last query</span></li> <li class="member"> <span class="function"><a href="function.maxdb-use-result.html" class="function" rel="rdfs-seeAlso">maxdb_use_result()</a> - Initiate a result set retrieval</span></li> <li class="member"> <span class="function"><a href="function.maxdb-query.html" class="function" rel="rdfs-seeAlso">maxdb_query()</a> - Performs a query on the database</span></li> </ul> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.maxdb-num-fields.html">maxdb_num_fields</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.maxdb-options.html">maxdb_options</a></div> <div class="up"><a href="ref.maxdb.html">MaxDB Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>