Count number of times a string in mixed array php - php

Question

I want an easy way to count a number of times the string "Apple" has present in the given
# My Array :
$arr = array(
1 => "Apple",
2 => "Orange",
3 => array(1=>"Bananna",2=>"Apple"),
4 => "Grape",
5 => "Apple",
6 => array(1=>"Grape"),
7 => "Orange");
# Want to count only "Apple"
$needle = "Apple";
# My Function :
function arrsearch($needle,$haystack,$return) {
if(!is_array($haystack)) {
return false;
}
foreach($haystack as $key=>$val) {
if(is_array($val)) {
$return = arrsearch($needle,$val,$return);
}else if(strtolower($val) == strtolower($needle)) {
$return[] = $key;
}
}
return $return;
}
$var = arrsearch("Apple",$arr,array());
echo " Output : ".count($var);
# Output : 3
I used the above function to find the number of times the string "Apple" in the array. Suggest me the best one.

Answer 1

You could use array_walk_recursive:
function search_for($arr, $term)
{
$count = 0;
array_walk_recursive($arr, function($item, $idx, $term) use (&$count) {
if (false !== stripos($item, $term)) {
++$count;
}
}, $term);
return $count;
}
search_for($arr, 'Apple'); // returns 3
The expression function($item, $idx, $term) use (&$count) { .. } is an anonymous function declaration; it works just like a regular function, but you can inherit variables from the parent scope by using use ($var) or use (&$var) if you need to modify it too. More examples can be found on the manual page.
Update
For versions of PHP < 5.3, you'd have to encapsulate the counter using objects:
class RecursiveArraySearcher
{
private $c = 0;
public static function find($arr, $term)
{
$obj = new self;
array_walk_recursive($arr, array($obj, 'ismatch'), $term);
return $obj->c;
}
public function ismatch($item, $key, $term)
{
if (false !== stripos($item, $term)) {
++$this->c;
}
}
}
echo RecursiveArraySearcher::find($arr, 'Apple'); // 3

Answer 2

You can use a recursive function like this ..
function finditem($item,$array){
$count = 0;
foreach($array as $key => $value){
if(is_array($value) == true){
$countx = finditem($item,$value);
$count = $count + $countx;
}else if($value == $item)
$count++;
}
return $count;
}
echo finditem("Apple",$arr);
Hope it helps.

Answer 3

Another solution is to flat the array and count the values:
<?php
function search_for($arr, $term) {
$flatten_array = array();
$it = new RecursiveIteratorIterator(new RecursiveArrayIterator($arr));
foreach($it as $v) {
$flatten_array[] = $v;
}
$count_values = array_count_values($flatten_array);
return $count_values[$term];
}
echo search_for($arr, 'Apple'); // print 3