<?
function break_point(){
ob_flush();
flush();
sleep(.1);
debugBreak();
}
print("this will get shown first,");
print("as will this.<br>");
break_point();
print("this won't get shown until after ");
print("continuing the breakpoint.<br>");
break_point();
print("end!");
?>
debugbreak不是内置函数吗，为什么是没有定义的呢.谢谢

不是吧，你从那里看到debugbreak是内置函数的，php手册里没有啊