how to check if a name exist multiple times in an array - php

Question

i need to check if there is the name john more than 3 times in the names key within the following array that contains 4 different sub arrays
Array
(
[0] => Array
(
[total] => 4.2
[name] => john
)
[1] => Array
(
[total] => 2
[name] => john
)
[2] => Array
(
[total] => 3
[name] => adam
)
[3] => Array
(
[total] => 1.5
[name] => john
)
)
i was using mysql first but i prefer to use php instead

Answer 1

You can do the following:
$counts = array_count_values(array_column($array,"name"));
Then to check if there's 3 people called "john" :
if (isset($counts["john"]) && $counts["john"] >= 3) {
//Do stuff
} else {
//Do different stuff
}
To find check all peole not called "john" you can either change the above to as #Andreas suggests:
if (isset($counts["john"]) && (count($array) - $counts["john"]) > 3) {
//Do stuff
} else {
//Do different stuff
}
Alternatively do:
$notJohn = count(array_filter($array, function ($element) {
return $element["name" != "john";
}));
if ($notJohn >= 3) ...

Answer 2

A function like this will do the work
I have roughly written it in mobile.
$occurence = 0;
function a() {
for($x = 0; $x < 4; $x++) {
for($y = 0; $y < 2; $y++) {
if (array[$x][$y] === "John") {
$occurence++;
}
}
}
if($occurence > 3) {
return false;
}
else {
return true;
}
}

Answer 3

Here, $namesArray in an array with repeated value in it.Target is to count how many time exist each value in array.
$namesArray =
array("John","Mark","John","Dan","Hasib","Milon","Samad","Milon","John");
$newArray = array();
foreach($namesArray as $name){
if(isset($newArray[$name])){
$newArray[$name]++;
}else{
$newArray[$name] = 1;
}
}
According to code here is output :
Array(
[John] => 3
[Mark] => 1
[Dan] => 1
[Hasib] => 1
[Milon] => 2
[Samad] => 1
)