What is the purpose of ob_start() ?

[beingchinmay]

OB_start() turn on the output buffer. While the buffer is on, no output is sent rather it is stored in the internal buffer. Inorder to get content from output Ob_get_content function can be used.

[kentowin]

ob_start() tells PHP to start output buffering, meaning that anything you output after ob_start() wont be sent to the browser until the end of the page or ob_end() etc are reached.

[pitterjhon44]

What is the purpose of ob_start() ?