PHP version (#34)

* PHP version

* Update pwned.inc.php

Slight optimization.

pwned.inc.php

@@ -0,0 +1,38 @@
+<?php
+
+//Converts the input password to sha1
+$sha1pwd = (string) sha1(/*Input Password Here*/);
+
+//takes the first 5 characters of the sha1 hash
+$head = (string) substr($sha1pwd, 0, 5);
+
+//takes the last 5 characters of the sha1 hash and makes them uppercase
+$tail = strtoupper((string) substr($sha1pwd, -5));
+
+//Performs the http request to the pwnd api
+$url = 'https://api.pwnedpasswords.com/range/' . $head;
+$res = (string) file_get_contents($url);
+
+//Parses the results of the http request breaking it up into an array of seperate hashes
+$res = preg_split('/\s+/', $res, -1, PREG_SPLIT_NO_EMPTY);
+
+//Goes through all the hashes
+foreach($res as $v)
+{
+
+    //Splits the hashes from the count
+    $c = explode(':', $v);
+    
+    //Checks if any of the hashes' last 5 characters matches the tail variable
+    if(strpos($c[0], $tail) !== false)
+    {
+
+        //Returns the amount of times the password appears in the pwnd api
+        $count = $c[1];
+        return $count;
+
+    }
+
+}
+
+?>