![]() This is different than running a standard 1 second sleep loop, due to sleeping longer does not consume as much CPU. This is not a replacement for multi-threading, but it could help someone that wants to do something cheap. We will catch you with another interesting article soon ‘ until‘ then keep reading and keep supporting us.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 searchĪn example of using sleep to run a set of functions at different intervals. Similarly, the loop breaks when the count is equal to or greater than 10. Here when the count is equal to five continue statement will jump over to the next iteration skipping the rest of the loop body. I am using the same infinite loop example. The break statement will exit out of the loop and will pass the control to the next statement while the continue statement will skip the current iteration and start the next iteration in the loop. You can use a break and continue statements inside while loop. And this integer value specifies the number of seconds to be passed while putting the program execution into sleep. This parameter should be in integer data type. Single Line Statement Alter Flow with break and continue Statement PHP sleep () accepts only one and mandatory argument denoting the period of time, for which, the PHP code execution invoking this function, should be paused. # until false do echo "Counter = $count" ((count++)) sleep 2 done ![]() ![]() Here you have to use a semicolon ( ) to terminate each statement. This is the same as our first infinite loop example but in a single line. You can create single-line loop statements. ![]() count=0Ĭreate Infinite Loop in Linux Create Single Line Statements When you try to simulate infinite loops try to use sleep which will pass the script periodically. I have a php issue with while and sleep, the while loop echo all only at the end of the loop insted of echo every 1 second. You can create an infinite loop using a false statement as an expression. This function takes the number of seconds as its parameter and will return TRUE if it succeeds and FALSE when a failure occurs. In this short article, you will learn how to use until loop in your shell scripts using the following examples. sleep () function is one of the important built-in functions provided by PHP version 4.0 or above to delay any script's execution process for a certain time interval.
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