How to set array pointer to a specific position?

Is there a way to set the pointer of an array to a specific key?
I save the current position in an array using
$base_position = key($myarray);

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I then do various reads back and forth in the array using

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at the end of the routine I want to be able to go back to my base position in the array using the key that I saved in $base_position
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Vel EousResearch & Development ManagerCommented:
You can reset the array pointer (moving you back to the start) and then loop through your array using next to compare the current iteration key with your base key.

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ClintonKAuthor Commented:
From Vel Eous's advice I use this code to locate he current key and then move the array pointer
* find out where the current type is in the array. Read through the array until $var is found*/
foreach ($aircraft_types as $key => $info):
	if (array_search($var, $info)): break; endif;
/* move the array pointer to the location of the current type */
while (key($aircraft_types) !== $key && key($aircraft_types) !== null) next($aircraft_types);

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ClintonKAuthor Commented:
Advice successfully coded and included in the project.
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