Go Back   vb.org Archive > vBulletin 3 Discussion > vB3 Programming Discussions
  #1  
Old 10-11-2009, 12:31 AM
m002.p's Avatar
m002.p m002.p is offline
 
Join Date: Jan 2007
Location: Worcester
Posts: 240
Благодарил(а): 0 раз(а)
Поблагодарили: 0 раз(а) в 0 сообщениях
Default Alternatives to php unlink to stop an overlapping script run?

Hi everyone,

I have a script that runs every 3 seconds kickstarted by CRON every minute. I want to however stop the script overlapping itself as it sometimes does, so in short, I would like to only allow it to run once per time.

So I formulated a method without using MYSQL, a simple .txt file check as follows. The only issue is sometimes and randomly it forgets to remove the file so I end up with a script not running at all. At times my script willl run for a few hours then eventually stop as the txt file hasnt deleted after one of the script run. Other times, it simply runs once and then doesnt do so again as the file or command unlink hasnt worked. The only way to then start everything again is remove the file manually using FTP.

So, my question is, any ideas for simple alternatives or if not, what could be the reason for the random non deletion of the file on the server?

PHP Code:
<?php
$fileN 
"check.txt";
$filename "home/public_html/serverchecks/$fileN";

if (
file_exists($filename)) {
    exit();

}else{

$ourFileHandle fopen($fileN'w') or die("can't open file");
fclose($ourFileHandle);

}

// Script code HERE

unlink($fileN); 

?>
Any ideas?

Thanks in advance.

Matt
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 02:59 PM.


Powered by vBulletin® Version 3.8.12 by vBS
Copyright ©2000 - 2024, vBulletin Solutions Inc.
X vBulletin 3.8.12 by vBS Debug Information
  • Page Generation 0.03232 seconds
  • Memory Usage 2,155KB
  • Queries Executed 13 (?)
More Information
Template Usage:
  • (1)SHOWTHREAD
  • (1)ad_footer_end
  • (1)ad_footer_start
  • (1)ad_header_end
  • (1)ad_header_logo
  • (1)ad_navbar_below
  • (1)ad_showthread_beforeqr
  • (1)ad_showthread_firstpost
  • (1)ad_showthread_firstpost_sig
  • (1)ad_showthread_firstpost_start
  • (1)bbcode_php
  • (1)footer
  • (1)forumjump
  • (1)forumrules
  • (1)gobutton
  • (1)header
  • (1)headinclude
  • (1)navbar
  • (3)navbar_link
  • (120)option
  • (1)post_thanks_box
  • (1)post_thanks_button
  • (1)post_thanks_javascript
  • (1)post_thanks_navbar_search
  • (1)post_thanks_postbit_info
  • (1)postbit
  • (1)postbit_onlinestatus
  • (1)postbit_wrapper
  • (1)spacer_close
  • (1)spacer_open
  • (1)tagbit_wrapper 

Phrase Groups Available:
  • global
  • inlinemod
  • postbit
  • posting
  • reputationlevel
  • showthread
Included Files:
  • ./showthread.php
  • ./global.php
  • ./includes/init.php
  • ./includes/class_core.php
  • ./includes/config.php
  • ./includes/functions.php
  • ./includes/class_hook.php
  • ./includes/modsystem_functions.php
  • ./includes/functions_bigthree.php
  • ./includes/class_postbit.php
  • ./includes/class_bbcode.php
  • ./includes/functions_reputation.php
  • ./includes/functions_post_thanks.php 

Hooks Called:
  • init_startup
  • init_startup_session_setup_start
  • init_startup_session_setup_complete
  • cache_permissions
  • fetch_postinfo_query
  • fetch_postinfo
  • fetch_threadinfo_query
  • fetch_threadinfo
  • fetch_foruminfo
  • style_fetch
  • cache_templates
  • global_start
  • parse_templates
  • global_setup_complete
  • showthread_start
  • showthread_getinfo
  • forumjump
  • showthread_post_start
  • showthread_query_postids
  • showthread_query
  • bbcode_fetch_tags
  • bbcode_create
  • showthread_postbit_create
  • postbit_factory
  • postbit_display_start
  • post_thanks_function_post_thanks_off_start
  • post_thanks_function_post_thanks_off_end
  • post_thanks_function_fetch_thanks_start
  • post_thanks_function_fetch_thanks_end
  • post_thanks_function_thanked_already_start
  • post_thanks_function_thanked_already_end
  • fetch_musername
  • postbit_imicons
  • bbcode_parse_start
  • bbcode_parse_complete_precache
  • bbcode_parse_complete
  • postbit_display_complete
  • post_thanks_function_can_thank_this_post_start
  • tag_fetchbit_complete
  • forumrules
  • navbits
  • navbits_complete
  • showthread_complete