The while loop executes a block of code as long as the specified condition is true.ExampleGet your own PHP Server Print $i as long as $i is less than 6: $i = 1; while ($i < 6) { echo $i; $i++; } Try it Yourself » Note: remember to increment $i, or else the loop...
1、while循环while循环是PHP中最简单的循环,其基本格式为:while (expr){ statement } //或者 while (expr): statement endwhile;该语法表示,只要expr表达式为TRUE,那么就一直执行statement直到expr为FALSE为止,statement表示要执行的动作或逻辑。例子:<?php $i = 1; while ($i <= 10) { echo $i; $i++; ...
The while loop The do...while loop Another do...while loop The for loop The foreach loop Examples explainedPHP FunctionsCreate a function Function with one argument Function with two arguments Function with default argument value Function that returns a value Examples explained...
In PHP, we have the following loop types: while- loops through a block of code as long as the specified condition is true do...while- loops through a block of code once, and then repeats the loop as long as the specified condition is true ...
while (true) { // 循环体 } } “` 嵌套死循环是非常危险的,因为它们会很快导致服务器崩溃。 3. 递归死循环示例 递归调用是一种函数调用自身的方法。在此示例中,函数在没有任何终止条件的情况下递归调用自身,导致无限递归。 “`php function recursiveLoop() { recursiveLoop(); } recursiveLoop(); “` ...
('http://0.0.0.0:8001'); $worker->eventLoop = Swoole::class;// Or Swow::class or Fiber::class$worker->onMessage =function(TcpConnection $connection, Request $request){ Coroutine::create(function(){echofile_get_contents("http://www.example.com/event/notify"); }); $connection->send(...
In this example, it was possible to remove the++$countstatement from inside thewhileloop and place it directly into the conditional expression of the loop. What now happens is that PHP encounters the variable$countat the start of each iteration of the loop and, noticing that it is prefaced...
// Fetch the "aggregate structure"$fh=fopen("/home/hfuecks/files/results.txt","r");// Iterate over the structurewhile(!feof($fh)){$line=fgets($fh);// do stuff with the line here} 上面三段代码,虽然处理的是不同的resource(资源),但是功能都是遍历结果集(loop over contents),因此Iterator...
构建一个可工作的开发环境可能是令人生畏的,尤其是对于绝对的初学者来说。为了跟进本书中的项目,您需要访问 Apache、PHP 和 MySQL 的有效安装,最好是在您的本地机器上。出于速度和安全性的考虑,总是希望在本地进行测试。这样做既保护了你正在进行的工作不受开放互联网的影响,又减少了上传文件到 FTP 服务器和等...
$arr=array(); while(!feof($fopen)) { $get=fgets($fopen); if(!empty($get)) $arr[]=str_replace("\n","",$get); } $this->closeresource($fopen); return $arr; } } $file=new file(new sort('Apple Orange Banana Strawberry'),"E:\\"); ...