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<title>Getting A Set of Documents With a Query</title>
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<h2 class="title">Getting A Set of Documents With a Query</h2>
<p class="para">
We can use the query to get a set of documents from our collection. For
example, if we wanted to get all documents where <em>"i"</em>
> <em>50</em>, we could write:
</p>
<div class="example" id="mongo.tutorial.multi.query-example">
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$connection </span><span style="color: #007700">= new </span><span style="color: #0000BB">MongoClient</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$collection </span><span style="color: #007700">= </span><span style="color: #0000BB">$connection</span><span style="color: #007700">-></span><span style="color: #0000BB">database</span><span style="color: #007700">-></span><span style="color: #0000BB">collectionName</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= array( </span><span style="color: #DD0000">"i" </span><span style="color: #007700">=> array( </span><span style="color: #DD0000">'$gt' </span><span style="color: #007700">=> </span><span style="color: #0000BB">50 </span><span style="color: #007700">) ); </span><span style="color: #FF8000">//note the single quotes around '$gt'<br /></span><span style="color: #0000BB">$cursor </span><span style="color: #007700">= </span><span style="color: #0000BB">$coll</span><span style="color: #007700">-></span><span style="color: #0000BB">find</span><span style="color: #007700">( </span><span style="color: #0000BB">$query </span><span style="color: #007700">);<br /><br />while ( </span><span style="color: #0000BB">$cursor</span><span style="color: #007700">-></span><span style="color: #0000BB">hasNext</span><span style="color: #007700">() )<br />{<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">( </span><span style="color: #0000BB">$cursor</span><span style="color: #007700">-></span><span style="color: #0000BB">getNext</span><span style="color: #007700">() );<br />}<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
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<div class="example-contents"><p>
which should print the documents where <em>"i"</em> >
<em>50</em>. We could also get a range, say
<em>20 < i <= 30</em>:
</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
<?php
$connection = new MongoClient();
$collection = $connection->database->collectionName;
$query = array( 'i' => array( '$gt' => 20, "\$lte" => 30 ) );
$cursor = $coll->find( $query );
while ( $cursor->hasNext() )
{
var_dump( $cursor->getNext() );
}
?>
</pre></div>
</div>
</div>
<p class="para">
Remember to always escape the $-symbol or use single quotes. Otherwise PHP
will interpret it to be the variable <var class="varname"><var class="varname">$gt</var></var>.
</p>
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