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phparrayslaravel
Adriano Vianna
Adriano Vianna

Reputation: 43

Check if array fields are empty in PHP

I need to check if the fields in an array are empty. I would like to know if there is any function in PHP that does this. I've tried empty(), but since it checks if the array is empty, it returns false because the array has fields.

The following array is below:

"wm" => array:7 [▼
    "make" => null
    "model" => null
    "version" => null
    "portal_plan_id" => null
    "portal_highlight_id" => null
    "price_type_id" => null
    "announce" => null
  ]

See that the values are null and they are the ones I need to check.

Thank you!

Upvotes: 3

Views: 1259

Answers (2)

Cliford Mlotshwa
Cliford Mlotshwa

Reputation: 21

$array = [
     'make' => KIA,
     'model' => Koup,
     'version' => 5.0,
     'portal_plan_id' => null 
];

if(in_array(null, $array)){
    // do something
}

The above checks if there there is at least one null value, in this case it will evaluate to true

$array = [
   'make' => null,
   'model' => null,
   'version' => null,
   'portal_plan_id' => null  
];

if(count(array_unique($array)) == 1 && array_unique($array)['make'] == null)
{        
       //do something
}

Where ['make'] is your first index, you can pick any index. The above will evaluate to true. This is how it works; it checks if all values are the same(array_unique($array)) == 1) and if the first value is null (array_unique($array)['make'] == null). By logic if the first value is null and all values are the same, you can conclude that all values are null

Upvotes: 0

N Mahurin
N Mahurin

Reputation: 1446

There are two ways to do this depending on what you need. If you want to know if any values are null: http://php.net/manual/en/function.array-search.php

array_search(null, $array)

The array_search will return false if no keys are null. So you can do 

if(array_search(null, $array) !== false){
    // There is at least one null value
}

If you want to know which keys hold a null value: http://php.net/manual/en/function.array-keys.php

array_keys($array, null)

The array_keys will provide all keys that have a null value. So you can check

if(count(array_keys($array, null)) > 0){
    // There is at least one null value. array_keys($array, null) can retrieve the keys that are null
}

Upvotes: 4

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