8/13/2023 0 Comments Php sleep every so many loops![]() Output:- Difference Between While and Do…While Loop A ( do-while loop) executes a block of code once, then evaluates the condition if the condition is true, the expression is repeated as long as the given condition is true. The ( do-while loop) is a while loop variant in which the state is evaluated at the conclusion of each loop iteration. A while loop can be used to read records returned from a database query.(While loops) are used to run a block of code before a certain condition is met.They are used to continuously execute a block of code before the set condition is met. The ( while) assertion cycles around a block of code as long as the ( while) statement’s condition evaluates to true. foreach – Loops for each unit of an array across a block of code.for – Loops via a code block before a given number is reached in the counter.If the condition is true, the declaration shall be repeated until the condition stated is true. do.while – The code block running once and then is tested.while – Loops through a code block as long as the given condition is true.Four separate loop styles are supported by PHP. The fundamental concept behind a loop is to simplify repeated processes in a programmer so as to save time and effort. Loops are used again and again to run the same block of code, provided a certain requirement is fulfilled. So, we can use loops rather than applying almost identical code lines to a script. Sometimes when you write code, you would like a number of times the block of code to run repeatedly. While using time_sleep_until() function, if we are not specifying upcoming temporal data, rather passing old timestamp, then, this function will cause warning notice.A Loop is an Iterative Control Structure which requires a number of times until a given condition is met to perform the same number of codes.Also sending arguments with another data type except for integer value will cause PHP warning error, like, Warning: sleep() expects parameter 1 to be long.Warning: sleep(): Number of seconds must be greater than or equal to 0 If we send negative values to PHP sleep functions, then it will display notice to the browser, as follows.These points are used to be aware of any failure or warning notice, that may cause while invoking PHP sleep functions. ![]() The following list of the point should be kept in mind on writing PHP sleep programs. These differ from sleep() function with respect to the unit of time with which the parameter of these functions is passed. There are three other functions deals with the operations of pausing PHP program execution. Current Time is: 16:09:07 Related PHP Functions Pausing Execution Putting into sleep at: 16:09:02 waked up after 5 seconds. The program will display time in (Hour: Minute: Seconds) format, before and after sleep() function, and also, it will display how many seconds the program is paused using sleep(). ![]() For that, the range is specified from 5 to 10 seconds with rand().īefore invoking sleep with a randomly selected period of time, we have printed the time and repeat the same, after sleep is done. In the above program, we have used, rand() function, for randomly selecting a number of seconds, the program to be put into sleep. "" sleep($sleep_time) echo "waked up after $sleep_time seconds. Let us have a PHP example program with sleep() function pausing execution with specified amount of time. ![]() This will be done by a lot of work, like, using for getting current and manipulating them to set a limit for running loops to let the program to wait for loop execution and thereby simulating sleep(). And sometimes, people who are new to PHP may also use for holding program execution for a while, with the required amount of time in seconds. Some languages like Javascript, not having direct functions like sleep, people might obtain sleep operation by using a loop, XMLHTTP request and etc. 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. PHP sleep() accepts only one and mandatory argument denoting the period of time, for what, the PHP code execution invoking this function, should be paused. This sleeping time could be controlled by a parameter, sending as an argument to this function. Like other languages, PHP sleep() is also used to pause program execution for a particular amount of time. Last modified on February 24th, 2017 by Vincy. ![]()
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