PHP array_keys multiple levels - php

Question

I have array1 like this:
Array
(
[0] => 123
[1] => 456
[2] => 789
)
And array 2 like this
Array
(
[0] => Array
(
[0] => some text
[1] => 888
[2] => some
[3] => text
)
[1] => Array
(
[0] => some text
[1] => 123
[2] => some
[3] => text
)
[2] => Array
(
[0] => some text
[1] => 999
[2] => some
[3] => text
)
[3] => Array
(
[0] => some text
[1] => Array
(
[1] => 456
[2] => 789
)
[2] => some
[3] => text
)
[4] => Array
(
[0] => some text
[1] => 123
[2] => some
[3] => text
)
)
I am checking only 1. column of second array and finding values that match values from first array. This is my code:
$test=array();
$xcol = array_column($array2, 1);
foreach( $array1 as $key => $value ) {
if( ($foundKey = array_keys($xcol, $value)) !== false ) {
$rrt=$foundKey;
foreach($rrt as $rte){
$test[]=$array2[$rte];
}
}
}
echo "<pre>";
print_r($test);
echo "</pre>";
It is working and giving me proper results but it does not check for all levels. Can anybody please point me what am I doing wrong?
My output is:
Array
(
[0] => Array
(
[0] => some text
[1] => 123
[2] => some
[3] => text
)
[1] => Array
(
[0] => some text
[1] => 123
[2] => some
[3] => text
)
)
And desired output is:
Array
(
[0] => Array
(
[0] => some text
[1] => 123
[2] => some
[3] => text
)
[1] => Array
(
[0] => some text
[1] => Array
(
[1] => 456
[2] => 789
)
[2] => some
[3] => text
)
[2] => Array
(
[0] => some text
[1] => 123
[2] => some
[3] => text
)
)

Answer 1

Solution:
create a loop which loop your $array2 which holds datas you wanted to get whos values match in first array $array1
foreach($array2 as $data) {
Inside loop create another loop which loop your indexes
foreach($data as $value) {
But before than create a condition if your index value is array loop it and check it it's index value is match in any indexes from $array1 use php function in_array for that
if (gettype($value) == "array") {
foreach($value as $val) {
if (in_array($val, $array1) ) {
$result[] = $data;
Then if you find it just stop the loop using break to avoid duplication
break;
}
}
Else you just directly use in_array
} else if (in_array($value, $array1)) {
$result[] = $data;
}
}
}
Just grab the code here in Demo
Help it helps just mark it answer if you are satisfied to it

Answer 2

Lets make a recursive method for this. What is recursion you ask? Well it is simply a method that calls it self.
<?php
$array1 = array(123,456,789);
$array2 = array(
array(
"some text"
, 888
, "some"
, "text"
),
array(
"some text"
,123
,"some"
,"text"
),
array(
"some text"
,999
,"some"
,"text"
),
array(
"some text"
,array(456,789)
,"some"
,"text"
),
array(
"another text"
,123
,"some"
,"text"
)
);
$final = array();
foreach($array1 as $needle){
foreach($array2 as $haystack){
if(find($needle,$haystack)){
$final[] = $haystack;
}
}
}
print_r($final);
function find($needle, $haystack){
$result = false;
foreach ($haystack as $value) {
if(is_array($value)){
$result = find($needle, $value);
} else {
if($needle == $value){
$result = true;
}
}
}
return $result;
}