PHP - get all keys from a array that start with a certain string

Question

I have an array that looks like this:

array(
  \'abc\' => 0,
  \'foo-bcd\' => 1,
  \'foo-def\' => 1,
  \'foo-xyz\' => 0,
  // ...
)

Answer 1

foreach($arr as $key => $value)
{
   if(preg_match('/^foo-/', $key))
   {
        // You can access $value or create a new array based off these values
   }
}