How I can check if multi array keys exist?
Example:
$array = array(
array('first_id' => 2, 'second_id' => 4, 'third_id' => 6),
array('first_id' => 3, 'second_id' => 5, 'third_id' => 7)
);
And now I want to check if in array exist row with params:
first_id = 3,
second_id = 5,
third_id = 6.
in this example, I should get no results, becase third_id = 6 is not exist (it exist but with first_id = 2 and second_id = 4).
How I can check it in easy way in PHP?
Thanks.
PHP's native array equality check will return true for arrays that have the same keys and values, so you should just be able to use in_array for this - it will take care of the "depth" automatically:
$set = [
['first_id' => 2, 'second_id' => 4, 'third_id' => 6],
['first_id' => 3, 'second_id' => 5, 'third_id' => 7]
];
$tests = [
['first_id' => 3, 'second_id' => 5, 'third_id' => 7],
['first_id' => 3, 'second_id' => 5, 'third_id' => 6],
['first_id' => 2, 'second_id' => 4, 'third_id' => 6],
['first_id' => 2, 'second_id' => 5, 'third_id' => 6],
];
foreach ($tests as $test) {
var_dump(in_array($test, $set));
}
bool(true)
bool(false)
bool(true)
bool(false)
If it's important that the array keys are also in the right order, add the third paramater true to the in_array call. This will use strict equality, rather than loose, and require the arrays to be ordered identically. See the information about equality here: http://php.net/manual/en/language.operators.array.php
You can use isset, array_search, and array_filter
for only one liner try this..
$array = array(
array('first_id' => 2, 'second_id' => 4, 'third_id' => 6),
array('first_id' => 3, 'second_id' => 5, 'third_id' => 7)
);
$first_id = 2;
$second_id = 4;
$third_id = 6;
//check and get array index if exist
$index = array_keys(array_filter($array, function($item) use ($first_id,
$second_id, $third_id) { return $item['first_id'] === $first_id &&
$item['second_id'] === $second_id && $item['third_id'] === $third_id; }));
//print out that array index
print_r($array[$index[0]]);
array_key_exists()orisset()