&reftitle.examples;

## Basic usage

Basic example on using memtrack extension:

### Creating large array in a function

    <?php

    /* /tmp/example1.php */

    function foo() {
        $a = array();
        for ($i = 0; $i < 10000; $i++) $a[] = "test";
        return $a;
    }
    $arr = foo();

    ?>

Run the example with the following command:

    php -d memtrack.enabled=1 -d memtrack.soft_limit=1M -d memtrack.vm_limit=3M /tmp/example1.php

&example.outputs.similar;

    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