计算php数组中的值并消除重复

Question

I'm trying to count the values in a php array and eliminate repetitions have leaving only 1. The format of my arrangement is as follows:

Array
(
[0] => Array
    (
        [inscripcion_id] => 3932
        [nombre] => Prueba
        [email] => [e-mail]
    )

[1] => Array
    (
        [inscripcion_id] => 3926
        [nombre] => Prueba
        [email] => [e-mail]
    )

[2] => Array
    (
        [inscripcion_id] => 3921
        [nombre] => Nicolas
        [email] => [e-mail]
    )
)

I look matches are based on the email field, if the email appears more than 1 time in the arrangements must be eliminated leaving only 1. The problem is I can not get as often appears no less eliminate it. Try array_count_values does not work, I can find the matches of each email but only in the subarray therefore always find 1 each as follows for example:

Array ( [3932] => 1 [Prueba] => 1 [[e-mail]] => 1 ) 
Array ( [3926] => 1 [Prueba] => 1 [[e-mail]] => 1 ) 

I hope the result is this:

Array
(
[0] => Array
    (
        [inscripcion_id] => 3932
        [nombre] => Prueba
        [email] => [e-mail]
    )

[1] => Array
    (
        [inscripcion_id] => 3921
        [nombre] => Nicolas
        [email] => [e-mail]
    )
)

Answer 1

This Should do it.

print_r(unique_multidim_array($array, 'email'));

function unique_multidim_array($array, $key){
    $temp_array = array();
    $i = 0;
    $key_array = array();

    foreach($array as $val){
        if(!in_array($val[$key],$key_array)){
            $key_array[$i] = $val[$key];
            $temp_array[$i] = $val;
        }
        $i++;
    }
    return $temp_array;
}