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PHP 输出控制 flush() 函数
tryphp_oc_flush
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<!DOCTYPE html> <html> <body> <?php // Some browsers will not display the content if it is too short // We use str_pad() to make the output long enough echo str_pad("Hello World!", 4096); // Use flush() to send the string to the browser flush(); // Display the rest of the content three seconds later sleep(3); echo "<br>"; echo "Hello World!"; ?> </body> </html>