CODEWITHSUNDEEP
phpforeach
Rubyx
Rubyx

Reputation: 798

Remove duplicate from foreach

I'm trying to remove duplicate form foreach but it doesn't work. I know I can do this with SQL but I need to use PHP.

My code:

<?php foreach($cities as $city):?>
    <a class="btn" href="$city['url'];?>">
        <?= $city['city'];?>
    </a>
<?php endforeach;?>

Result:

> London
> New York
> Paris
> New York
> Berlin

I tried with array_unique but it doesn't work too.

<?php foreach(array_unique($cities) as $city):?>
    <a class="btn" href="$city['url'];?>">
        <?= $city['city'];?>
    </a>
<?php endforeach;?>

Where I'm wrong?

edit:

Array ( 
[0] => Array ( [city] => London [url] => London--UK ) 
[1] => Array ( [city] => New York [url] => NewYork--USA ) 
[2] => Array ( [city] => Paris [url] => Paris--France )
[3] => Array ( [city] => New York [url] => NewYork--USA )
[5] => Array ( [city] => Berlin [url] => Berlin--Germany )
)

Upvotes: 1

Views: 1399

Answers (1)

Guillermo Andres Fuentes Moral
Guillermo Andres Fuentes Moral

Reputation: 723

Try this

<?php 

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; 
} 


?>

Use

$details = array( 
    0 => array("id"=>"1", "name"=>"Mike",    "num"=>"9876543210"), 
    1 => array("id"=>"2", "name"=>"Carissa", "num"=>"08548596258"), 
    2 => array("id"=>"1", "name"=>"Mathew",  "num"=>"784581254"), 
); 

$details = unique_multidim_array($details,'id');

Source is a User Contributed Notes in http://php.net/manual/es/function.array-unique.php

Upvotes: 1

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