I have a PHP array like this one:

array( [0] => 1
       [1] => 2
       [2] => 3
       [3] => Some strings
)

How can I remove an entry that is not an integer number from an array? I need to output this:

array( [0] => 1
       [1] => 2
       [2] => 3
)

Can someone give me a clue?

php arrays
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