Search key replace value - php

Question

Let's say I have an array:
$myArray = array('alfa' => 'apple', 'bravo' => 'banana', 'charlie' => 'cherry', 'delta' => 'danjou pear');
I want to search it for certain keys and if found replace the values of those according to this other array:
$myReplacements = array('bravo' => 'bolognese', 'lie' => 'candy');
I know I can do this:
function array_search_replace($haystack, $replacements, $exactMatch = false) {
foreach($haystack as $haystackKey => $haystackValue) {
foreach($replacements as $replacementKey => $replacementValue) {
if($haystackKey == $replacementKey || (!$exactMatch && strpos($haystackKey, $replacementKey) !== false)) {
$haystack[$haystackKey] = $replacementValue;
}
}
}
return $haystack;
}
But, is there really no smarter/faster way to do it?
EDIT: I also need to be able to search for keyparts, so that 'lie' and 'charlie' results in a match.
EDIT2: Expected results are:
var_dump(array_search_replace($myArray, $myReplacements));
array(4) { ["alfa"]=> string(5) "apple" ["bravo"]=> string(9) "bolognese" ["charlie"]=> string(5) "candy" ["delta"]=> string(11) "danjou pear" }
var_dump(array_search_replace($myArray, $myReplacements, true));
array(4) { ["alfa"]=> string(5) "apple" ["bravo"]=> string(9) "bolognese" ["charlie"]=> string(6) "cherry" ["delta"]=> string(11) "danjou pear" }

Answer 1

You can use the PHP's array_replace function.
Also, array_merge does something similar.
In your code:
$finalArray = array_replace($myArray, $myReplacements);
Full PHP Code
<?php
$myArray = array('alfa' => 'apple', 'bravo' => 'banana', 'charlie' => 'cherry', 'delta' => 'danjou pear');
$myReplacements = array('bravo' => 'bolognese', 'lie' => 'candy');
$finalArray = array_replace($myArray, $myReplacements);
print_r($finalArray);
?>
Output
Array
(
[alfa] => apple
[bravo] => bolognese
[charlie] => cherry
[delta] => danjou pear
[lie] => candy
)
Fiddle here: http://codepad.viper-7.com/60o5xT

Answer 2

Is this what you need ?
<?php
$myArray = array('alfa' => 'apple', 'bravo' => 'banana', 'charlie' => 'cherry', 'delta' => 'danjou pear');
$myReplacements = array('bravo' => 'bolognese', 'lie' => 'candy');
print_r(array_merge($myArray, $myReplacements));
?>
Output:
Array
(
[alfa] => apple
[bravo] => bolognese
[charlie] => cherry
[delta] => danjou pear
[lie] => candy
)
Using array_merge

Answer 3

Arrays in PHP are hashes, you don't need to search for a key, you can access it in O(1) time.
$myArray = array('alfa' => 'apple', 'bravo' => 'banana', 'charlie' => 'cherry', 'delta' => 'danjou pear');
$myReplacements = array('bravo' => 'bolognese', 'lie' => 'candy');
var_dump($myArray);
foreach($myReplacements as $k => $v) {
if(array_key_exists($k, $myArray)) {
$myArray[$k] = $v;
}
}
var_dump($myArray);
Output:
array(4) {
["alfa"]=>
string(5) "apple"
["bravo"]=>
string(6) "banana"
["charlie"]=>
string(6) "cherry"
["delta"]=>
string(11) "danjou pear"
}
array(4) {
["alfa"]=>
string(5) "apple"
["bravo"]=>
string(9) "bolognese"
["charlie"]=>
string(6) "cherry"
["delta"]=>
string(11) "danjou pear"
}

Answer 4

you can use the following code to directly replace the matching key
<?php
$base = array("orange", "banana", "apple", "raspberry");
$replacements = array(0 => "pineapple", 4 => "cherry");
$replacements2 = array(0 => "grape");
$basket = array_replace($base, $replacements, $replacements2);
print_r($basket);
?>
output:
Array
(
[0] => grape
[1] => banana
[2] => apple
[3] => raspberry
[4] => cherry
)