generic function for extracting values from an array with one particular key in PHP
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            by Sabya
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        Published on 2010-06-15T10:46:37Z
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            2010/06/15
            10:52 UTC
        
        
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Is it possible in PHP to extract values from an array with a particular key path and return an array of those values? I'll explain with an example:
$user =
  array (
    array(
      id => 1,
      email =>'[email protected]',
      project => array ('project_id' => 222, 'project_name' => 'design')
    ),
    array(
      id => 2,
      email =>'[email protected]',
      project => array ('project_id' => 333, 'project_name' => 'design')
    )
  );
/** I have to write a function something like: */
$projectIds = extractValuesWithKey($user, array('project', 'project_id'));
print_r($projectIds);
Output:
Array(
[0] => 222,
[1] => 333
)
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