Working with Arrays
Array's are a great way to logical group and order large sets of data. Recently, I was working on a project k
To support the search functionality, I figured there would be no easy way to just use array_filter and array_search. Resource cost was also a big factor; for's and foreach's just wouldn't work.
Below you will find a multidimensional_array_search function which will return all the arrays that contain the search string within it.
The Function:
The goal of the function is to return the parent array for what the content was found in:
/ *******************************
* array_multi_search
*
* @array array to be searched
* @input search string
*
* @return array(s) that match
****************************** /
function array_multi_search($array, $input){
$iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($array));
foreach($iterator as $id => $sub){
$subArray = $iterator->getSubIterator();
if(@strstr(strtolower($sub), strtolower($input))){
$subArray = iterator_to_array($subArray);
$outputArray[] = array_merge($subArray, array('Matched' => $id));
}
}
return $outputArray;
}
The above function is a smorgasburg of snippets I found on the PHP.Net docs and stackoverflow. I optimized it to return the array that is matched and the Match string to make it as useful as possible. Give it a go, and let me know how it works.
Example:
To test this code, you can use the following sample code:
$array = array( "a" => array(
"b" => array(
"c" => array(
"d" => array(
"e" => "HighOnPHP"
)
)
),
"1" => array(
"Two" => 3
),
"CCD" => array(
"DFfsdf" => array(
"HighOnPHP"
),
),
),
"A" => array(
"Twelve" => 3
),
"Another" => "HighOnPHP"
);
print_r(
array_multi_search($array, 'HighOnPHP')
); // [Another], [CCD] and [A]
print_r(
array_multi_search($array, 'e')
); //Returns [A], [Another] and [a][b][c][d][e]
Summary
This is not the best solution for this, but it works. It's simple user-land code and gets the job done. If you have a better solution please share!
