PHP anti-SQL injection attack

PHP anti-SQL injection attack collection does not have much filtering, mainly for the combination of PHP and MySQL. General anti-injection, as long as the use of PHP addslashes function is possible. Here is a copy of the code: PHP Code $_post = sql_injection ($_post);  $_get = Sql_injection ($_get);   function sql_injection ($content)  { if (!GET_MAGIC_QUOTES_GPC ()) { if (Is_array ($content ) { foreach ($content as $key = + $value) {  $content [$key] = addslashes ($value);  }  } else {&nbsp ; Addslashes ($content);  }  }  return $content; &NBSP,   Do the system, you can use the following code, but also copy. PHP code      function Inject_check ($sql _str) {       return eregi (' select|insert| Update|delete|\ ' |\/\*|\*|\.\.\/|\.\/|union|into|load_file|outfile ', $sql _str);    //filtering      }                function verify_id ( $id =null) {       if (! $id) {exit (' no submit parameter! ‘); }    //is null-judged        ElseIf (Inject_check ($id)) {exit (' arguments submitted are illegal! ‘); }    // Injection judgment        ElseIf (!is_numeric ($id)) {exit (' arguments submitted are illegal! ‘); }    //Digital judgment        $id = Intval ($id);    //integer             return   $id;     &NBSP,}                function Str_check ($str) {  &nbs P    if (!GET_MAGIC_QUOTES_GPC ()) {   //determines if MAGIC_QUOTES_GPC is open          $STR = Addslashes ($STR);    //filtering       }        $str = Str_replace ("_", "\_", $str);    //' _ ' filter out        $str = str_replace ("%", "\%", $str);    //'% ' filter out             return $str;     &NBSP,}                function Post_check ($post) {  &nbs P    if (!GET_MAGIC_QUOTES_GPC ()) {   //determines if MAGIC_QUOTES_GPC is open &NBSp        $post = addslashes ($post);    //do MAGIC_QUOTES_GPC not open the filter for submission data       }        $post = Str_repl Ace ("_", "\_", $post);    //' _ ' filter out        $post = str_replace ("%", "\%", $post);    //'% ' filter out        $post = NL2BR ($post);    //Enter conversion        $post = Htmlspecialchars ($post);    //HTML tag conversion             return $post;      }  

PHP anti-SQL injection attacks