Why are you making it so hard,
$in = array [
1 =>
array [
'country' => 'US',
'state' => 'Albama',
'city' => 'Brest',
'postcode' => '225001-225003',
'shipping_info' => 'DeliveryAvailable',
'is_zip_range' => 1,
'zip_from' => 225001,
'zip_to' => 225003
],
2 =>
array [
'country' => 'BY',
'state' => 'Brest',
'city' => 'Brest',
'postcode' => '225001-225003',
'shipping_info' => 'DeliveryAvailable',
'is_zip_range' => 1,
'zip_from' => 225001,
'zip_to' => 225003
]
];
$out = [];
foreach[$in as $i] if[!isset[$out[$i['postcode']]]] $out[$i['postcode']] = $i;
Sandbox
You can do the same thing with in_array, but the isset is faster.
In fact you dont even need to do the isset
foreach[$in as $i] $out[$i['postcode']] = $i;
Array keys are always unique, but this will retain the last duplicate where as the previous code keeps the first one.
And if the keys bug you
latter just do $out = array_values[$out] to reset them.
Write a PHP function to create a multidimensional unique array for any single key index. Sample Solution: PHP Code: Sample Output: Flowchart:PHP Array: Exercise-38 with Solution
Array
[
[0] => Array
[
[city_id] => 1
[name] => Sara
[mobile_num] => 1111111111
]
[1] => Array
[
[city_id] => 2
[name] => Robin
[mobile_num] => 2222222222
]
]
PHP Code Editor:
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Previous: Write a PHP script to count the total number of times a specific value appears in an array.
Next: Write a PHP program to remove duplicate values from an array which contains only strings or only integers.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
PHP: Tips of the Day
PHP: Check if PHP session has already started
Recommended way for versions of PHP >= 5.4.0, PHP 7
if [session_status[] == PHP_SESSION_NONE] {
session_start[];
}
For versions of PHP < 5.4.0
if[session_id[] == ''] {
session_start[];
}
Ref : //bit.ly/31TMQuq
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