String processing-how to remove intermediate strings in PHP

6691. club, registered, 2015-06-17T17: 15: 08Z, 2016-06-166688.club, registered, 2014-05-07T15: 02: 16Z, registered, 2015-06-10T06: 03: 05Z, 2016-06-096695.club, registered, 2015-06-10T14: 32: 14Z, 2016-06... 6691. club, registered, 2015-06-17T17: 15: 08Z, 2016-06-16
6688. club, registered, 2014-05-07T15: 02: 16Z, 2016-05-06
6689. club, registered, 2015-06-10T06: 03: 05Z
6695. club, registered, 2015-06-10T14: 32: 14Z
6694. club, registered, 2015-11-08T15: 01: 24Z, 2016-11-07
6693. club, registered, 2015-06-17T17: 20: 25Z
6692. club, registered,: 14: 43Z
6690. club, registered, 2015-06-22T08: 43: 14Z, 2016-06-21
6605. club, registered, 2015-06-25T08: 43: 19Z
6606. club, registered,: 56: 01Z
6603. club, registered, 2015-06-25T08: 43: 17Z
6604. club, registered, 2015-11-09T09: 13: 15Z, 2016-11-08
6681. club, registered, 2015-06-17T13: 44: 15Z
6608. club, registered, 2015-06-10T09: 27: 52Z
6607. club, registered, 2015-06-25T08: 43: 21Z
6682. club, registered,: 43: 28Z

In this case, I want to remove the section T15: 43: 28Z, starting with T and ending with Z.

I only have the PHP environment on my machine. I can see some East PHP. Other programs do not understand ............

Please advise me .......

Reply content:

6691. club, registered,: 15: 08Z
6688. club, registered, 2014-05-07T15: 02: 16Z, 2016-05-06
6689. club, registered, 2015-06-10T06: 03: 05Z
6695. club, registered, 2015-06-10T14: 32: 14Z
6694. club, registered, 2015-11-08T15: 01: 24Z, 2016-11-07
6693. club, registered, 2015-06-17T17: 20: 25Z
6692. club, registered,: 14: 43Z
6690. club, registered, 2015-06-22T08: 43: 14Z, 2016-06-21
6605. club, registered, 2015-06-25T08: 43: 19Z
6606. club, registered,: 56: 01Z
6603. club, registered, 2015-06-25T08: 43: 17Z
6604. club, registered, 2015-11-09T09: 13: 15Z, 2016-11-08
6681. club, registered, 2015-06-17T13: 44: 15Z
6608. club, registered, 2015-06-10T09: 27: 52Z
6607. club, registered, 2015-06-25T08: 43: 21Z
6682. club, registered,: 43: 28Z

In this case, I want to remove the section T15: 43: 28Z, starting with T and ending with Z.

I only have the PHP environment on my machine. I can see some East PHP. Other programs do not understand ............

Please advise me .......

You can use PHP to process small files. If the file is large, it is faster to use sed.
sed -i "s/T.*Z//g" test.txt

If regular expression matching is used, the registered user name may also contain TZ characters, so we can consider string truncation. After allT17:15:08Z,2016-06-16The length of this segment is fixed.

Use Regular Expressions

$ Subject = '2017. club, registered, 2015-06-17T17: 15: 08Z, 2016-06-16 '; $ pattern = '/(. *, [\ d] {4}-[\ d] {2}-[\ d] {2}) T [\ d:] {8} Z (, [\ d] {4}-[\ d] {2}-[\ d] {2} $)/'; preg_match ($ pattern, $ subject, $ matches ); print_r ($ matches);/* Array ([0] = & gt; 6691. club, registered, 2015-06-17T17: 15: 08Z, 2016-06-16 [1] => 6691. club, registered, [2] => )*/

$ Result = preg_replace ("/T \ d {2 }:\ d {2 }:\ d {2} Z/", "", $ str ); $ str is your text

Thank you. By studying the code above, I have learned and processed it myself:
The full-range code is as follows:

   \n";        echo preg_replace('/\w\d\d\:\d\d\:\d\d\w/',"",$buffer)."
\n";    }    if (! feof ( $handle )) {        echo  "Error: unexpected fgets() fail\n" ;    }     fclose ( $handle );} ?> 

Basically, I have achieved what I want. Thanks again for your help.