Description:
------------
First example under section Examples in documentation for Array type says, that creating an array with array(initial value) is the same as writing:

$a[key] = value;
$a[key] = value;
$a[key] = value;

but missing initialization of the variable.

This may also be a security issue for people using this way of initialization and also are using register_globals.

What should be added to the example is:
$a = array();

URL to related documentation page:
http://php.net/manual/en/language.types.array.php

Reproduce code:
---------------
// this
$a = array( 'color' => 'red',
            'taste' => 'sweet',
            'shape' => 'round',
            'name'  => 'apple',
                       4        // key will be 0
          );

// is completely equivalent with
$a['color'] = 'red';
$a['taste'] = 'sweet';
$a['shape'] = 'round';
$a['name']  = 'apple';
$a[]        = 4;        // key will be 0