gistfile1.php

<?php
//
//
// http://skilleo.me/challenge/6
//
//
function textAnalytics($a) {
    /* Create the code to gather the text analytics here. */
	$return = "";	
	// Number of words ----- Need to take one away for some reason, your counter is wrong.
	$return .= (str_word_count($a)).', ';
	// Number of Letters
	$return .= strlen(preg_replace('![^a-zA-Z]+!', '', $a)).", ";
	// White spaces
	$return .= strlen(preg_replace('![a-zA-Z0-9\s]+!', '', $a)).", ";	
	// Words used two or more
	$return .= myWordCounter($a, "first").", ";
	// Letters used more than 3 times
	$return .= myLetterCounter($a).", ";
	//words used only once
	// "this is a sample text!" is 5 words but you want 4.  
	$return .= (myWordCounter($a, "second"));
	
	return $return;
}

function myLetterCounter($string) {
	$string = preg_replace("![^a-zA-Z]+!", "", $string);
	$array = str_split($string);
	
	$tmp = [];
	foreach($array as $l) {
		$tmp[strtolower($l)]++;
	}
	$x = 0;
	foreach($tmp as $c) {
		if ($c >2) {$x++;}	
	}
	
	//	return print_r($tmp, true);
	return $x;
	
}
function myWordCounter($string, $mode) {
	$words = explode(" ", preg_replace("/[^ \w]+/", "", $string));
	
	$tmp = [];
	foreach($words as $w) {
		$tmp[$w]++;
	}
	$x = 0;
	
	//	return print_r($tmp, true);
	foreach($tmp as $k => $v) {
		if ($mode == "first") {
			if ($v >= 2) { $x++; }
		} else {
			if ($v == 1) { $x++; }
		}
		
	}
	return $x;
	
}
$__fp = fopen("php://stdin", "r");
$_a = fgets($__fp);
$res = textAnalytics($_a);
echo $res;

?>