#PHP SLEEP PERFORMANCE CODE#
sleep () delays the execution of code by a given number of seconds. For example, upgrading a PHP 5.6 application to PHP 7.3 typically doubles or triples application performance. Definition and Usage The sleep () function delays execution of the current script for a specified number of seconds. The php sleep () function gives us the ability to pause the execution of our code. 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. Boost PHP Performance by Upgrading to PHP 7.x If you’re still running applications on PHP 5.6, upgrading to PHP 7.3 or PHP 7.4 will significantly speed performance. For example, sleep (0.25) will pause program execution for 0 seconds. Note: In order to delay program execution for a fraction of a second, use usleep () as the sleep () function expects an int. 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. Delays the program execution for the given number of seconds. Duracin del sueo y desempeo escolar en adolescentes coreanos.
#PHP SLEEP PERFORMANCE ARCHIVE#
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 sleep is sometimes used in a mistaken attempt to prevent Denial of Service (DoS) attacks by throttling response rate. Sleep duration and school performance in Korean adolescents.
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