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<title>Declaring sub-namespaces</title>
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<h2 class="title">Declaring sub-namespaces</h2>
<p class="verinfo">(PHP 5 >= 5.3.0)</p>
<p class="para">
Much like directories and files, PHP namespaces also contain the ability to specify
a hierarchy of namespace names. Thus, a namespace name can be defined with
sub-levels:
<div class="example" id="example-236">
<p><strong>Example #1 Declaring a single namespace with hierarchy</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #007700">namespace </span><span style="color: #0000BB">MyProject</span><span style="color: #007700">\</span><span style="color: #0000BB">Sub</span><span style="color: #007700">\</span><span style="color: #0000BB">Level</span><span style="color: #007700">;<br /><br />const </span><span style="color: #0000BB">CONNECT_OK </span><span style="color: #007700">= </span><span style="color: #0000BB">1</span><span style="color: #007700">;<br />class </span><span style="color: #0000BB">Connection </span><span style="color: #007700">{ </span><span style="color: #FF8000">/* ... */ </span><span style="color: #007700">}<br />function </span><span style="color: #0000BB">connect</span><span style="color: #007700">() { </span><span style="color: #FF8000">/* ... */ </span><span style="color: #007700">}<br /><br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
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The above example creates constant <em>MyProject\Sub\Level\CONNECT_OK</em>,
class <em>MyProject\Sub\Level\Connection</em> and function
<em>MyProject\Sub\Level\connect</em>.
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