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<h2 class="title">Adding Multiple Documents</h2>
<p class="para">
In order to do more interesting things with queries, let's add multiple
simple documents to the collection. These documents will just be of the form
<em>array( "i" => <span class="replaceable">value</span> );</em> and we
can do this fairly efficiently in a loop:
</p>
<div class="example" id="mongo.tutorial.insert.multiple-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">$connection</span><span style="color: #007700">-></span><span style="color: #0000BB">database</span><span style="color: #007700">-></span><span style="color: #0000BB">collectionName</span><span style="color: #007700">;<br /><br />for ( </span><span style="color: #0000BB">$i </span><span style="color: #007700">= </span><span style="color: #0000BB">0</span><span style="color: #007700">; </span><span style="color: #0000BB">$i </span><span style="color: #007700">< </span><span style="color: #0000BB">100</span><span style="color: #007700">; </span><span style="color: #0000BB">$i</span><span style="color: #007700">++ )<br />{<br /> </span><span style="color: #0000BB">$collection</span><span style="color: #007700">-></span><span style="color: #0000BB">insert</span><span style="color: #007700">( array( </span><span style="color: #DD0000">'i' </span><span style="color: #007700">=> </span><span style="color: #0000BB">$i</span><span style="color: #007700">, </span><span style="color: #DD0000">"field</span><span style="color: #007700">{</span><span style="color: #0000BB">$i</span><span style="color: #007700">}</span><span style="color: #DD0000">" </span><span style="color: #007700">=> </span><span style="color: #0000BB">$i </span><span style="color: #007700">* </span><span style="color: #0000BB">2 </span><span style="color: #007700">) );<br />}<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
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<p class="para">
Notice that we can insert arrays with different keys into the same
collection. This aspect is what we mean when we say that MongoDB is
"schema-free". In the example above each document has an
<em>i</em> field, but also a field name in the form of
<em>field</em> + <em>$i</em>.
</p>
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