Is this a correct usage of ob_start() in my WordPress project?

1. What does Ob_start () function do?
2. Should you use Ob_start?
3. Does WordPress use output buffering?
4. What does the optional parameter Chunk_size refer to in the function Ob_start ()?
5. How do I enable output buffering?
6. How does output buffering work?
7. What is output buffer in PHP?
8. What is Ob_flush in PHP?
9. What mean buffer?
10. What is a output buffer?
11. How stop PHP buffering?
12. How is output from PHP generated?

What does Ob_start () function do?

The ob_start() function creates an output buffer. A callback function can be passed in to do processing on the contents of the buffer before it gets flushed from the buffer. Flags can be used to permit or restrict what the buffer is able to do.

Should you use Ob_start?

Using ob_start allows you to keep the content in a server-side buffer until you are ready to display it. This is commonly used to so that pages can send headers 'after' they've 'sent' some content already (ie, deciding to redirect half way through rendering a page).

Does WordPress use output buffering?

The Many Uses of PHP Output Buffering in WordPress. ... A first code demo that shows how PHP output buffering is helpful for WordPress shortcodes. A second code demo that shows how PHP output buffering can help create complex the_content filters that use readable HTML output.

What does the optional parameter Chunk_size refer to in the function Ob_start ()?

chunk_size. If the optional parameter chunk_size is passed, the buffer will be flushed after any output call which causes the buffer's length to equal or exceed chunk_size . The default value 0 means that the output function will only be called when the output buffer is closed.

How do I enable output buffering?

Output buffering is configured via output_buffering in php. ini and you can see its current configuration value by running phpinfo() . PHP's documentation has the following information on output buffering: You can enable output buffering for all files by setting this directive to 'On'.

How does output buffering work?

tl;dr: Output buffering is a way to tell PHP to hold some data before it is sent to the browser. Then you can retrieve the data and put it in a variable, manipulate it, and send it to the browser once you're finished.

What is output buffer in PHP?

Output Buffering is a method to tell the PHP engine to hold the output data before sending it to the browser.

What is Ob_flush in PHP?

The ob_flush() function outputs the contents of the topmost output buffer and then clears the buffer of the contents. The output may be caught by another output buffer or, if there are no other output buffers, sent directly to the browser.

What mean buffer?

1 : any of various devices or pieces of material for reducing shock or damage due to contact. 2 : a means or device used as a cushion against the shock of fluctuations in business or financial activity. 3 : something that serves as a protective barrier: such as. a : buffer state.

What is a output buffer?

An output buffer is a location in memory or cache where data ready to be seen is held until the display device is ready.

How stop PHP buffering?

The output buffer

You can turn on output buffering with ob_start() , and turn it off with ob_end_flush() or ob_end_clean() . You can also have all your scripts automatically start with output buffering on using the output_buffering option in php. ini. The default value of this option for production versions of php.

How is output from PHP generated?

The interpreter switches between code mode back and text mode when it sees another special tag which signals the end of the code. This enables the mix of static text with dynamically generated results.