Php array intersect key
From w3cyberlearnings
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PHP function array_intersect_key
This function compares two or more arrays use the first array key for the comparison. If the key existed in all other arrays, it will return the key and value pairs from the first array.
Syntax array_intersect_key
- array1: array1 for comparison with all other arrays
- array2: second array
- array3: third array
array_intersect_key(array1, array2, array3,...);
Example 1
<?php
$student1 = array('Abbey' => 89, 'Abbie' => 88, 'Abbigail' => 83, 'Aiyana' => 93);
$student2 = array('Abbey' => 81, 'Abbie' => 89, 'Aimee' => 84, 'Aiyana' => 92);
$student3 = array('Abbey' => 90, 'Abbie' => 87, 'Abbigail' => 87, 'Aiyana' => 88);
$student_list = array_intersect_key($student1, $student2, $student3);
foreach ($student_list as $name => $score) {
echo "{$name} takes all the exams, and the first exam scores {$score}.<br/>";
}
?>
Output
Abbey takes all the exams, and the first exam scores 89. Abbie takes all the exams, and the first exam scores 88. Aiyana takes all the exams, and the first exam scores 93.
Example 2
<?php
$score_players1 = array(50 => 'Alexandra', 43 => 'Eileen', 53 => 'Katrina', 65 => 'Alondra');
$score_players2 = array(43 => 'Alondra', 50 => 'Elisabeth', 54 => 'Katelynn', 83 => 'Allyssa');
$score_players3 = array(50 => 'Diamond', 90 => 'Allison', 79 => 'Alicia', 77 => 'Aliyah');
$scores = array_intersect_key($score_players1, $score_players2, $score_players3);
foreach($scores as $score=>$name) {
echo "Score {$score} happens in all games, and the first players received the score is {$name}<br/>";
}
?>
Output
Score 50 happens in all games, and the first players received the score is Alexandra
Related Links
- array_change_key_case
- array_chunk
- array_combine
- array_count_values
- array_diff_assoc
- array_diff_key
- array_diff_uassoc
- array_diff_ukey
- array_diff
- array_fill_keys
- array_fill
- array_filter
- array_flip
- array_intersect_assoc
- array_intersect_key
- array_intersect_uassoc
- array_intersect_ukey
- array_intersect
- array_key_ exists
- array_keys
