A simple PHP content filtering instance _ PHP Tutorial

A simple PHP content filtering instance .? Phpif ($ _ POST) {two methods to convert the obtained file content to an array: * export fconfile_get_contents(.filter.txt); $ filter_wordexplode (n, $ fcon); * export filter_wordfile(.filter.txt)

If ($ _ POST)

{

// You can convert the file content to 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 try again! '); Script ";

Echo "back ";

Exit;

}

}

Echo "the content you entered is:". $ str;

}

?>

Test whether the filter is effective:

From: blog of adamboy

Http://www.bkjia.com/PHPjc/478591.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/478591.htmlTechArticle? Php if ($ _ POST) {// you can convert the file content to an array using the following two methods:/* $ fcon = file_get_contents (. /filter.txt); $ filter_word = explode (\ n, $ fcon); */$ filter_word = file (. /filter.txt )...