PHP

php get unique values by key from array

$array = array(
	array('group' => 'test', 'name' => 'Jane'),
    array('group' => 'test', 'name' => 'John'),
    array('group' => 'admin', 'name' => 'superadmin')
);
$unique_values_by_key = array_unique(array_column($array, 'group'));

array unique php

<?php
$input = array("a" => "green", "red", "b" => "green", "blue", "red");
$result = array_unique($input);
print_r($result);
?>

array unique php

<?php
    // Syntax: array_unique(array $array, int $flags = SORT_STRING): array
    // Desc: Removes duplicate values from an array
    $arr = Array("red", "red", "green", "blue", "blue", "white");
    echo "<pre>";
    print_r($arr);
    echo "</pre> <br><br>";
    
    $arrUnique = array_unique($arr);

    echo "<pre>";
    print_r($arrUnique);
    echo "</pre> <br><br>";

    /* -------- output -----------
    Array
    (
        [0] => red
        [1] => red
        [2] => green
        [3] => blue
        [4] => blue
        [5] => white
    )
    
    Array
    (
        [0] => red
        [2] => green
        [3] => blue
        [5] => white
    )
    */
?>

unique key value array php

$input = array_map("unserialize", array_unique(array_map("serialize", $input)));

php unique assoc array by value

<?php
    function uniquAsoc($array,$key){
        $resArray=[];
        foreach($array as $val){
          if(empty($resArray)){
            array_push($resArray,$val);
          }else{
            $value=array_column($resArray,$key);
            if(!in_array($val[$key],$value)){
                array_push($resArray,$val);
              }
          }          
        }
        
        return $resArray;
    }
$array=[['phone'=>123,'id'=>1],['phone'=>748,'id'=>1],['phone'=>958,'id'=>3]];
print_r(uniquAsoc($array,'id')); 
/*
Array
(
    [0] => Array
        (
            [phone] => 123
            [id] => 1
        )

    [1] => Array
        (
            [phone] => 958
            [id] => 3
        )

)
  */
?>