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<h2 class="title">Basic usage</h2>
<p class="para">
Basic example on using memtrack extension:
<div class="example" id="example-463">
<p><strong>Example #1 Creating large array in a function</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /><br /></span><span style="color: #FF8000">/* /tmp/example1.php */<br /><br /></span><span style="color: #007700">function </span><span style="color: #0000BB">foo</span><span style="color: #007700">() {<br /> </span><span style="color: #0000BB">$a </span><span style="color: #007700">= array();<br /> for (</span><span style="color: #0000BB">$i </span><span style="color: #007700">= </span><span style="color: #0000BB">0</span><span style="color: #007700">; </span><span style="color: #0000BB">$i </span><span style="color: #007700">< </span><span style="color: #0000BB">10000</span><span style="color: #007700">; </span><span style="color: #0000BB">$i</span><span style="color: #007700">++) </span><span style="color: #0000BB">$a</span><span style="color: #007700">[] = </span><span style="color: #DD0000">"test"</span><span style="color: #007700">;<br /> return </span><span style="color: #0000BB">$a</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">$arr </span><span style="color: #007700">= </span><span style="color: #0000BB">foo</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">?></span>
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</code></div>
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</p>
<p class="para">
Run the example with the following command:
</p>
<div class="example-contents screen">
<div class="cdata"><pre>
php -d memtrack.enabled=1 -d memtrack.soft_limit=1M -d memtrack.vm_limit=3M /tmp/example1.php
</pre></div>
</div>
<p class="para">The above example will output
something similar to:</p>
<div class="example-contents screen">
<div class="cdata"><pre>
Warning: [memtrack] [pid 26177] user function foo() executed in /tmp/example1.php on line 10 allocated 4194304 bytes in /tmp/example1.php on line 0
Warning: [memtrack] [pid 26177] virtual memory usage on shutdown: 32911360 bytes in Unknown on line 0
</pre></div>
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