PHP multidimensional array search key - php

Question

$list[7362][0]['value'] = 'apple';
$list[7362][1]['value'] = 'orange';
$list[9215][0]['value'] = 'lemon';
I want key for value 'orange'. I tried with array_search and array_column, but obviously I have issue array_column.
$key = array_search('orange', array_column($list, 'value'));
as described
PHP multidimensional array search by value
but my case is slighly different. Key should return 7362.

Answer 1

You can try something like this:
<?php
$list = array();
$list[7362][0]['value'] = 'apple';
$list[7362][1]['value'] = 'orange';
$list[9215][0]['value'] = 'lemon';
foreach ($list as $keynum=>$keyarr) {
foreach ($keyarr as $key=>$index) {
if (array_search('orange', $index) !== false) {
echo "orange found in $key >> $keynum";
}
}
}
?>
You can choose to just echo out echo $keynum; for your purpose.
Loop through the arrays and find out where you find orange.
You can refactor that a bit into a function like this:
<?php
function getKeys($list, $text) {
foreach ($list as $keynum=>$keyarr) {
foreach ($keyarr as $key=>$index) {
if (array_search($text, $index) !== false) {
return "$text found in $key >> $keynum";
}
}
}
return "not found";
}
$list = array();
$list[7362][0]['value'] = 'apple';
$list[7362][1]['value'] = 'orange';
$list[9215][0]['value'] = 'lemon';
echo getKeys($list, 'lemon');
?>
echo getKeys($list, 'lemon'); will give you lemon found in 0 >> 9215.
echo getKeys($list, 'orange'); will give you orange found in 1 >> 7362.
echo getKeys($list, 'apple'); will give you apple found in 0 >> 7362.

Answer 2

It's nested to far for the array_column at that level, so just loop:
foreach($list as $k => $v) {
if(in_array('orange', array_column($v, 'value'))) {
$key = $k;
break;
}
}
If there can be more than one then create an array and don't break:
$key[] = $k;
//break;