A simple PHP content filtering example_PHP tutorial

if($_POST)

{

//Two ways to get the file content and convert it into an array:

/*

$fcon = file_get_contents("./filter.txt");

$filter_word = explode("n",$fcon);

*/

$filter_word = file("./filter.txt");

//$filter_word = array("test1","test2","test3","test4");

$str = $_POST["mess"];

for($i=0;$i

{

if(preg_match("/".(trim($filter_word[$i]))."/i",$str))

{

echo "<script>alert('The content you entered contains illegal content, please re-enter!');</script>";

echo "return";

exit;

}

}

echo "The content you entered is:".$str;

}

?>

Test whether filtering is effective:

Excerpted from: adamboy’s blog

http://www.bkjia.com/PHPjc/478591.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/478591.htmlTechArticle?php if($_POST) { //Two ways to get the file content and convert it into an array: /* $fcon = file_get_contents(./filter.txt); $filter_word = explode(n,$fcon); */ $filter_word = file(./filter.txt)...