(PHP 4 >= 4.3.0, PHP 5, PHP 7)
ob_get_clean — Get current buffer contents and delete current output buffer
ob_get_clean ( ) : string
Gets the current buffer contents and delete current output buffer.
ob_get_clean() essentially executes both ob_get_contents() and ob_end_clean().
The output buffer must be started by ob_start() with PHP_OUTPUT_HANDLER_CLEANABLE and PHP_OUTPUT_HANDLER_REMOVABLE flags. Otherwise ob_get_clean() will not work.
Returns the contents of the output buffer and end output buffering. If output buffering isn't active then false is returned.
Example #1 A simple ob_get_clean() example
<?php ob_start(); echo "Hello World"; $out = ob_get_clean(); $out = strtolower($out); var_dump($out); ?>
The above example will output:
string(11) "hello world"
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https://www.php.net/manual/en/function.ob-get-clean.php