How to count and print characters that occur at least Y times? - php

Question

I want to count the number of occurrences of each character in a string and print the ones that occur at least Y times.
Example :
Examples func(X: string, Y: int):
func("UserGems",2) => ["s" => 2, "e" => 2]
func("UserGems",3) => []
This what I could achieve so far:
$str = "PHP is pretty fun!!";
$strArray = count_chars($str, 1);
$num = 1;
foreach ($strArray as $key => $value) {
if ($value = $num) {
echo "The character <b>'".chr($key)."'</b> was found $value time(s)
<br>";
}
}

Answer 1

Firstly, you need to list all letters count with separately and to calculate it. Also, you need to calculate elements equal to count which is your find. I wrote 3 types it for your:
<?php
function check($string,$count) {
$achives = [];
$strings = [];
$strArray = count_chars($string, 1);
if($count) {
foreach($strArray as $char => $cnt) {
if($cnt==$count) {
$achives[chr($char)] = $cnt;
}
}
}
return $achives;
}
echo '<pre>';
print_r(check("aa we are all theere Tural a1",1));
So, it is very short version
function check($string,$count = 1) {
$achives = [];
$strArray = count_chars($string, 1);
array_walk($strArray,function($cnt,$letter) use (&$achives,$count){
$cnt!==$count?:$achives[chr($letter)] = $cnt;
});
return $achives;
}
echo '<pre>';
print_r(check("aa we are all theere Tural a1",3));
But it is exactly answer for your question:
<?php
function check($string,$count) {
$achives = [];
$strings = [];
$strArray = str_split($string, 1);
foreach($strArray as $index => $char ){
$strings[$char] = isset($strings[$char])?++$strings[$char]:1;
}
if($count) {
foreach($strings as $char => $cnt) {
if($cnt==$count) {
$achives[$char] = $cnt;
}
}
}
return $achives;
}
<?php
function check($string,$count) {
$achives = [];
$strings = [];
$strArray = count_chars($string, 1);
if($count) {
foreach($strArray as $char => $cnt) {
if($cnt==$count) {
$achives[chr($char)] = $cnt;
}
}
}
return $achives;
}
echo '<pre>';
print_r(check("aa we are all theere Tural a1",1));

Answer 2

You can simply do this with php str_split() and array_count_values() built in functions. i.e.
$chars = str_split("Hello, World!");
$letterCountArray = array_count_values($chars);
foreach ($letterCountArray as $key => $value) {
echo "The character <b>'".$key."'</b> was found $value time(s)\n";
}
Output