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<?php
include 'SimpleArray.php';
 
 $a = new SimpleArray();
 $a['123.456'] = 'string';  // the key is a string
 $a[123.456]   = 'float';   // the key is a float
 $a[]          = 'value';   // standard definition
 
 // it's impossible to walk through it using foreach or each
 // The right way is :
 $a->rewind();
 while($a->valid()) {
 // do some stuff using $a->key() and $a->current()
 $a->next();
 }
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