ob_get_length()

ob_get_length() — Return the length of the output buffer.

Built-in function of PHP 8.5. The manual lists it as available in PHP 4 >= 4.0.2, PHP 5, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.

What it does

This will return the length of the contents in the output buffer, in bytes.

Signature

ob_get_length(): int|false

Parameters

This function takes no parameters.

Return value

Returns the length of the output buffer contents, in bytes, or false if no buffering is active.

Example

A runnable snippet:

ob_start(); echo "Hello "; $len1 = ob_get_length(); echo "World"; $len2 = ob_get_length(); ob_end_clean(); echo $len1 . ", " . $len2;

Output:

6, 11

See also

ob_start(), ob_get_contents()

All PHP 8.5 built-in functions

Reference card built from the PHP manual page ob_get_length() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.