PHP遍历循环时回显结果 [英] php echo the result while iterating through the loop

问题描述

我是执行循环，内部循环中有数据处理功能.

I am execution loop and inside loop there is data processing function inside loop.

  for($i = 0 ; $i <=680 ; $i = $i + 40)
    {
          $url = 'http://www.yelp.com/biz/franchino-san-francisco?start=80';
          $root = yelp($url);
          var_dump($root);
    }

此循环执行需要很长时间，并且在整个循环结束时将在最后回显结果.

This loop takes long time to execute, and results are echoed at the end when entire loop completes.

如何在每次迭代期间回显结果?

How can I echo the result during each iteration?

实际上这里会发生什么?结果是否存储在缓冲区中，并在末尾回显或显示什么?

Actually what happens here? does to result are stored in buffer and at the end echoed or what?

推荐答案

PHP缓冲输出.

如果要立即将内容输出到浏览器，可以使用flush()和ob_flush()函数:

If you want to output stuff to the browser immediately you can use the flush() and ob_flush() functions:

for ($i = 0; $i <= 680; $i += 40) {
    $url = 'http://www.yelp.com/biz/franchino-san-francisco?start=80';
    $root = yelp($url);
    var_dump($root);
    flush();
    ob_flush();
}

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