Using in_array for multidimensional arrays - php

Question

Ok, so I have this array :-
0 =>
array (size=2)
'receiver_telmob' => string '0707105396' (length=10)
0 => string '0707105396' (length=10)
1 =>
array (size=2)
'receiver_telmob' => string '0704671668' (length=10)
0 => string '0704671668' (length=10)
2 =>
array (size=2)
'receiver_telmob' => string '0707333311' (length=10)
0 => string '0707333311' (length=10)
And I'm trying to search in this array using in_array. But, I never get any true value.
Here's what I'm trying to do:-
$searchnumber = '0707333311';
if(in_array($searchnumber,$arrayAbove))
{
//do something
}
But the if always results a false output. I guess that I'm not using the in_array correctly here. What should I correct to make it work?
Thanks.

Answer 1

$array = array(
"0" => array(
"receiver_telmob" => "0707105396",
"0" => "0707105396"
),
"1" => array(
"receiver_telmob" => "0704671668",
"0" => "0704671668"
),
"2" => array(
"receiver_telmob" => "0707333311",
"0" => "0707333311"
)
);
$searchnumber = "0707333311";
foreach($array as $v) {
if ($v['receiver_telmob'] == $searchnumber) {
$found = true;
}
}
echo (isset($found) ? 'search success' : 'search failed');

Answer 2

in_array() doesn't work with multi-dimensional arrays. You need something like this -
function in_multi_array($needle, $haystack, $strict = false) {
foreach ($haystack as $item) {
if (($strict ? $item === $needle : $item == $needle) || (is_array($item) && in_multi_array($needle, $item, $strict))) {
return true;
}
}
return false;
}
Then you could do this -
$searchnumber = '0707333311';
if(in_multi_array($searchnumber,$arrayAbove))
{
//do something
}

Answer 3

You can't use in_array for multidimensional arrays!
But this function should work for you:
<?php
function in_array_r($needle, $haystack, $strict = false) {
foreach ($haystack as $item) {
if (($strict ? $item === $needle : $item == $needle) || (is_array($item) && in_array_r($needle, $item, $strict))) {
return true;
}
}
return false;
}
?>
Then you can use it like this:
echo in_array_r("0707333311", $arrayAbove) ? 'true(found)' : 'false(not found)';

Answer 4

You would have to use in_array for each sub array.
So if you have a 1 dimensional array like
[1,4,43,2,5,4] you could call in_array but when you have multidimensional you have to iterate over the top dimension and call in_array
for($i = 0;$i < arr.count(); $i++){
if(in_array($searchnum, $arr[$i]){
//do something
}
}
NOTE: the example above only works for 2d arrays just to demonstrate what I was talking about

Answer 5

Try this:
function in_array_recursive($needle, $haystack) {
foreach($haystack as $item) {
if ($needle = $item || is_array($item) && in_array_recursive($needle, $item))
return true;
}
}
return false;
}
$searchnumber = '0707333311';
if(in_array_recursive($searchnumber,$arrayAbove))
{
//do something
}