How to count Array based on statement? - php

Question

I use validate php function to filter badword. And my problem is this script can't count badword in a statement that I've input. How to count badword in a statement..?
For example: You're badword1 and they badword2.
It's supposed to be 2 badword in that sentence.
PHP
function validasi($string,$banned_words) {
foreach($banned_words as $banned_word) {
if(stristr($string,$banned_word)){
return false;
}
}
return true;
}
$banned_words = array('badword1','badword2','badword3','badword4','badword5','badword6','badword7');
$teks = $_POST['teks'];
if (!validasi($teks,$banned_words)) {
echo count(!validasi($teks,$banned_words));
echo 'blocked!';
}else{
echo 'Text valid';
}
HTML
<form action="validasi.php" method="POST">
<input type="text" name="teks">
<input type="submit" value="Validasi">
</form>
Output
1 !blocked.
Expected Result
2 !blocked

Answer 1

Your script also don't count extra the words if they are using the same word multiple times in a string. Below here is a script i should use.
function getBadWords(){
$db_con = new PDO('dsn', 'use', 'pass'); // You PDO connection
$query = $db_con->prepare("SELECT * FROm tb_bannedwords");
$query->execute();
$return = array();
while($row=$query->fetch(PDO::FETCH_OBJ)) {
$data = $return[] = $row->banned_words;
}
return $return;
}
function validate($string){
$banned_words = getBadWords();
$count = 0;
foreach($banned_words as $banned_word){
$wordCount = substr_count($string, $banned_word);
if($wordCount > 0){
$count = $count + $wordCount;
}
}
return $count;
}
$teks = 'You\'re badword1 and they badword2 with badword1';
if(validate($teks) > 0){
echo validate($teks) . ' blocked!';
}else{
echo 'Text valid';
}

Answer 2

do this
function validasi($string,$banned_words) {
$badWordCount = 0;
foreach($banned_words as $banned_word) {
if(stristr($string,$banned_word)){
$badWordCount++;
}
}
return $badWordCount;
}
$banned_words = array('badword1','badword2','badword3','badword4','badword5','badword6','badword7');
$teks = $_POST['teks'];
$badWordsCount2 = validasi($teks,$banned_words);
if ($badWordsCount2 != 0) {
echo $badWordsCount2;
echo 'blocked!';
}else{
echo 'Text valid';
}