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PHP : array_combine() function

PHP: Combine array keys and values

The array_combine() function is used to creates an array by using one array for keys and another for its values.

Version:

(PHP 4 and above)

Syntax:

array_combine(array_keys, array_values)

Parameter:

Name Description Required /
Optional 		Type
array_keys The keys of the array to be used. Required Array
array_values The values of the array to be used. Required Array

Return value:

The combined array, FALSE if the arrays are empty or the number of elements for each array isn't equal.

Value Type : Array

Example :

<?php
$subject =array('Language', 'Math', 'Science', 'Geography');
$marks = array(77, 80, 90, 75);
$subject_marks=array_combine($subject, $marks);
print_r($subject_marks)
?>

Output:

Array ([Language] => 77 [Math] => 80 [Science] => 90 [Geography] => 75)

Pictorial Presentation:

php function reference: array_combine() function

View the example in the browser

Practice here online :

See also

PHP Function Reference

Previous:array_chunk
Next: array_count_values



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PHP: Tips of the Day

Filters the collection using the given callback

Example:

<?php
function tips_reject($items, $func)
{
  return array_values(array_diff($items, array_filter($items, $func)));
}

print_r(tips_reject(['Apple', 'Pear', 'Kiwi', 'Banana'], function ($item) {
  return strlen($item) > 4;
}));
?>

Output:

Array
(
    [0] => Pear
    [1] => Kiwi
)