Answers for "count number of occurrences without using inbuilt function php"

total no of occurances in string php

$str = "cdcdcdcdeeeef";
echo substr_count($str, 'c'); 


//please note needle is case sensitive

php count amount of times a value appears in array

$tmp = array_count_values($uid);
$cnt = $tmp[12];
//Or
$cnt = count(array_filter($uid,function($a) {return $a==12;}));
//In both cases $var will be a number