Methods and code examples for safe filtering of special characters in PHP

字Php The method and code example of the special character's security filtering

                                                                                                      ;$i (IF (STRPOS ($ Checkinfo, $ Badwords [$ i])! = False) {

 IF ($ Action == "0") {
 Echo "system detects prohibited Special characters: ". $ Badwords [$ i];
 exit;
 Break;}} elseif ($ action ==" 1 ") {
 $ Checkinfo = Str_replace ($ badwords [$ i]," "" "" "" "" "" "" "" "" "" "" "" ,$checkinfo);
                                                                                                                                                                                                                                                                                                                                                                                                               /*********************Call functions************************** **** *********************************************
                                                                       >

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function, action, false, count, detection