file_put_contents failed to open stream: Invalid

前兩天,使用file_put_contents方法, 傳入兩個實參，將內容寫入文件，一直報錯

file_put_contents(E:\config.php,content): failed to open stream: Invalid argument in 。。。

很少說，一番百度，終於尋得前輩留下的葵花寶典：

http://www.howtobuildsoftware.com/index.php/how-do/Fp6/php-php-file-put-contents-failed-to-open-stream-invalid-argument

內容以下：

Please help! I have tried figuring this out for over an hour What i am trying to do is to get form values via POST, and then put these into a timestamped txt file The error i get is:

Warning: file_put_contents(D:\wamp\www\weboldal\hu\php\en\03-14-15-11:08:48.txt): failed to open stream: Invalid argument in D:\wamp\www\weboldal\hu\php\en\formprocessing2.php on line 18

if ($_POST["type"] == "Type1") {
    print "Type1";
    $filename = date("m-d-y-h:i:s");
    $fullfilename = "D:\\wamp\\www\\weboldal\\hu\\php\\en\\".$filename.".txt";
    print $fullfilename;
    while (file_exists($fullfilename)) {
        print "Please wait a few seconds, server is busy";
        sleep(1);
    }
    $type = $_POST["type"];
    $name = $_POST["name"];
    $email = $_POST["email"];
    $password = $_POST["password"];
    $contents = $type."r\n".$name."r\n".$email."r\n".$password;
    file_put_contents($fullfilename,$contents,LOCK_EX);

EDIT: The problem was that windows would not accept colons in the filename, thanks to user @Hobo Sapiens for pointing that out

Best How To 

Windows will reject the filename with the timestamp as it is because of the colons（冒號）. Remove those and you should be fine.

 

 

上面代碼：file_put_contents($fullfilename,$contents,LOCK_EX);只是多傳入LOCK_EX這個參數，在文件寫入的時候進行鎖定，問題解決！

可是，疑問也來了，

colons（冒號）和LOCK_EX（鎖定）有啥聯繫？

求大神稍稍指點迷津