![]() ![]() timenanosleep() - Sleep for an amount of seconds and nanoseconds. flush () may not be able to override the buffering scheme of your web server and it has no effect on any client-side buffering in the browser. This attempts to push current output all the way to the browser with a few caveats. ![]() What you can do is use the javascript function: setTimeout('window.location 'tooslow. Flushes the system write buffers of PHP and whatever backend PHP is using (CGI, a web server, etc). timesleepuntil() - Sleep until a timestamp. I think you'll want to do this in javascript, because if you use php sleep(30), the user wont be seeing anything until after 30 seconds. Example 1 A timesleepuntil () example ![]() For your information, here's a list of related functions: sleep() / usleep() - Sleep for an amount of (micro)seconds. It's in seconds rather than microseconds (it's intended for heavy-duty CLI scripts), but that could easily be changed by using microtime(true) and usleep if greater granularity was required. If you want it done asynchronously, see my answer here: Scheduling php scripts. Not realising that this function existed, I wrote something similar, but it has the additional facility to specify a minimum pause even if the target time has already been reached, for instance in a processor-intensive loop. Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Enumerations Errors Exceptions Fibers Generators Attributes References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Predefined Attributes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Session Security Filesystem Security Database Security Error Reporting User Submitted Data Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation GUI Extensions Keyboard Shortcuts ? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search ![]()
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