检查文件存在与PHP中的正则表达式[重复]

I have image uploaded on the server with the id of customer. But I don't want to upload multiple format of files twice (e.g. there should be only one image for customer id=1 that is 1.jpg OR 1.png)

How can I check globally while updating image whether that file is already there or not?

can I check file exist without extension of file?

I am using this command to check file.

file_exists('./media/customer-id/'.$cus_id);

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Use scandir() to run a ls like command and receive an array of the directories contents. Then loop through the files and see if anything matches the customer ID.

$exists = false;
foreach(scandir('./media/customer-id') as $file) {
    if(preg_match('/^' . $customer_id . '\.$/', $file)) {
        $exists = true;
        break;
    }
}

You could use glob() for this and count the result.

function patternExists($pattern) {
    return count(glob($pattern)) > 0;
}

and use like this

if (patternExists("./media/customer-id/".$cus_id."*")) {
    // bad!
}