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phparraysfilteringprefixpreg-grep

Native function to filter array by prefix

Say I have an array with the following members:

car_porsche
car_mercedes
car_toyota
motorcycle_suzuki
motorcycle_honda
motorcycle_motoguzzi

How can I get an array with all the elements starting with car_? There was a native function for this but I forgot its name.

Do you know which function I mean? I know how to do it with for/foreach/array_filter. I'm quite sure there was a function for exactly this.

Solution

  • Well, you could do it using preg_grep():

    $output = preg_grep('!^car_!', $array);

    You could use array_filter() too but you have to pass a test function into that.