php determines the upload type and avoids upload vulnerabilities
function ($file_name,$pass_type=array('jpg','jpeg','gif','bmp','png')){ $yx_file = $pass_type; $kzm = substr(strrchr($file_name,"."),1); $is_img = in_array(strtolower($kzm),$yx_file); if($is_img){ return true; }else{ return false; } }
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