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Full Discussion: Split large file into 24 small files on one hour basis
Top Forums UNIX for Beginners Questions & Answers Split large file into 24 small files on one hour basis Post 303036436 by Neo on Wednesday 26th of June 2019 07:09:24 AM
Old 06-26-2019
Actually, you do not even need to convert to a unix timestamp in PHP, you can use your formatted time string directly:

For example, I just tested your example data with your formatted time :

Code:
<?php
echo  date(h,"2019-05-20 09:55:39.945");

06

No need to convert to a unix timestamp.

Untested, but close:

Code:
<?php
$data = file_get_contents('mydata.txt');
foreach ($data as $entry) {
    $my_time_stuff = explode(' ', $entry);
    $formatted_time = $my_time_stuff[0] . ' ' . $my_time_stuff[1];
    $hour = date(h, $formatted_time);
    $file = 'myfilename' . $hour . '.txt';
    file_put_contents($file, $entry, FILE_APPEND | LOCK_EX);
}

Hope this PHP example helps.

If you want it to be "harder to read" and short:

Code:
<?php
$data = file_get_contents('mydata.txt');
foreach ($data as $entry) {
    $m= explode(' ', $entry);
    file_put_contents('myfilename' . date(h, $m[0] . ' ' . $m[1]) . '.txt', $entry, FILE_APPEND | LOCK_EX);
}

I prefer the long, easy to read, more-or-less self-documenting (first) version.
 

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LEARN ABOUT ULTRIX

intro

intro(3int)															       intro(3int)

Name
       intro - introduction to international subroutines

Description
       The  internationalization package provides a convenient method of writing or converting applications so that they can operate in the appli-
       cation user's natural language.

       The package consists of the following:

       o      Tools for the creation and modification of message catalogs

       o      An international function library, which is called libi

       o      A set of international functions available in the C library, libc

       o      An international compiler that creates language support databases from special source files

       o      An announcement and initialization mechanism

       o      A utility for converting data from one codeset to another codeset

       When you use international library functions in a C program, compile it with the option to include libi, as shown:
       % cc -o prog prog.c -li
       Some of the international functions are available in the standard C library.  You need not compile with the option if you  use  only  those
       functions.  The functions that are available in the standard C library are and

   Libraries
		     Internationalization Library Calls
       catgetmsg     get  message  from  a  message catalog (provided for XPG-2
		     compatibility)
       catgets	     read a program message
       catopen	     open or close a message catalog
       nl_init	     set localization for internationalized  program  (provided
		     for XPG-2 compatibility)
       nl_langinfo   language information
       nl_printf     print formatted output (provided for XPG-2 compatibility)
       nl_scanf      convert formatted input (provided for XPG-2 compatibility)
       printf	     print formatted output
       scanf	     convert formatted input
       vprintf	     print formatted output of varargs argument list
		     Standard C Library Calls
       setlocale     set localization for internationalized program
       strftime      convert time and date to string
       strxfrm	     string transformation
       strcoll	     string collation comparison

   Header Files
       i_defs.h     contains language support database structure
       i_errno.h    contains error numbers and messages
       langinfo.h   contains  the langinfo definitions for the locale
		    database
       locale.h     contains the declarations used by the ANSI setlo-
		    cale and localeconv functions
       nl_types.h   contains the definitions for all the internation-
		    alization (libi) functions

See Also
       iconv(1), extract(1int), gencat(1int), ic(1int), strextract(1int), strmerge(1int), trans(1int), ctype(3), setlocale(3),	strcoll(3),  strf-
       time(3),  strxfrm(3), catgets(3int), catopen(3int), nl_langinfo(3int), printf(3int), scanf(3int), vprintf(3int), environ(5int), lang(5int),
       nl_types(5int), patterns(5int)
       Guide to Developing International Software

																       intro(3int)
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