Is it possible that I can get the data from the other array based on the value from another?
If I input value from array it will return a value from other array.
Example:
$arr1 = ['A','B','C'];
$arr2 = [1,2,3,];
Input: 2
Result: B
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4 Answers
Do they need to be separate?
You could use array_combine() to assign a key to the value and then input is just $array[$input] - e.g.
$arr1 = ['A', 'B', 'C'];
$arr2 = [1, 2, 3];
$arr = array_combine($arr2, $arr1);
echo $arr[$_POST['input']]; # will display 2
5 Comments
Qirel
Ohh, neat. Didn't think of
array_combine().
treyBake
@Qirel and I didn't think of
array_search() xD haha :pQirel
They have an interesting oposite though:
array_search() will return the first instance of the result (in this case, 2), while array_combine() will return the last. So the two approaches will give different results if there are duplicate values in $arr2, as seen here: 3v4l.org/BZg0eQirel
We just did ;-) But yeah, sure - if you want to edit in a note in your answer, knock yourself out (don't actually knock yourself out, that hurts - or so I've been told).
treyBake
@Qirel xD nah, I mean, I guess it's more of a friendly just in-case then a requirement (as $arr1 = unique values).. so I guess comment will do :) and that's true, though, if knocked out quick enough, you skip the pain phase xD
Since your arrays have not been given any specific keys, they are assigned numerically indexes from PHP, starting from zero.
You can then use array_search() to get the key of the $arr2 array, and use that to find the value in $arr1.
$key = array_search($input, $arr2);
$output = $arr1[$key];
If either array has defined indexes, you can use array_values() to just get the values and get the numeric indexes from PHP again.
- Live demo at https://3v4l.org/mf688
Comments
This function combine 2 or more arrays
<?php
$array1 = array('A', 'B', 'C');
$array2 = array('1', '2', '3');
$result = array_merge($array1, $array2);
print_r($result);
?>
1 Comment
mentallurg
SHow us how can one use it. How will you get "B" for argument 2?
Working with array $result above (1 of 2 possibility)
<?php echo $result[1]; ?>
Or use
<?php
$q = '2'; $key = array_search($q, $result);
if(!$key)
echo "This search returned no key and value pair";
else
echo "This search for value: " . $q . " is present in key: " . $key;
?>