About the enhanced use of the callback Ob_start () function _php Tutorial

Source: Internet
Author: User
About the enhanced use of callback functions.
When the structure of the program is more complex, more introduction and no rule reference. There is an echo ' aaaa ' in a file; Will affect the program output.

function Ob_gzip ($content)

In such a callback function how to judge the program has echo print and all the non-HTML output?

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Try not to output the content in the callback function Ah, my more than 10 k common.class.php file does not let it have a space, lest the call of the time of the problem.
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To make a regular reference.
Single inlet, shallow construction
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I want to limit it to the echo output .... Be sure to have it output in HTML. To ensure that the procedure can be performed in a healthy state.
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Ob_start ()
That's what this is about.
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Write a function for me ...
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The Grass Bird learns
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Oh ah, study the
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Direct file start Ob_start (); It's okay.
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Ob_start (); Now that there is, it is still not possible to judge when Echo happened and how to abort it.

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