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关于ob_get_clean的疑问

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Release: 2016-06-23 13:56:36
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<?phpecho "hello word";$out=ob_get_clean();echo $out." everyone";?>
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这段程序执行结果是 hello word everyone
奇怪的是为什么可以不用声明 ob_start()


回复讨论(解决方案)

我在网上看到的说法是
ob_start()是打开缓冲区的意思,写不写关系不是很大,这里按照PHP标准的写法添加上去了。

缓冲区默认是打开的
你可用 ob_get_level() 观察到

缓冲区默认是打开的
你可用 ob_get_level() 观察到


原来如此~

你可以看看这个

//ob_start();ob_start();echo 12345;$out1 = ob_get_clean();echo "hello word";$out=ob_get_clean();echo $out.$out1;
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