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;
}
}The above is the detailed content of PHP upload file type judgment function (security). For more information, please follow other related articles on the PHP Chinese website!
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