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<?php $query = $_GET['q']; $category = $_GET['catid']; if(check_string($query)) { $query = filter_string($query); } else { echo "Error: Variable is not a string."; die; } function check_string($str) { return preg_match("/^\w+$/", (string)$str); } function filter_string($str) { return preg_replace('/^(.*)$/ie', "filter_function(\"\\1\")", $str); } function filter_function($str) { // do encoding / filtering etc. here return $str; } ?>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined array key "q" in /in/OclsK on line 2 Warning: Undefined array key "catid" in /in/OclsK on line 3 Error: Variable is not a string.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined index: q in /in/OclsK on line 2 Notice: Undefined index: catid in /in/OclsK on line 3 Error: Variable is not a string.
Output for 7.3.32 - 7.3.33
Error: Variable is not a string.
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Notice: Undefined index: q in /in/OclsK on line 2 Notice: Undefined index: catid in /in/OclsK on line 3 Error: Variable is not a string.
preferences:
290.19 ms | 402 KiB | 459 Q