Comportamentul acestor funcții este afectat de parametrii stabiliți în php.ini.
| Denumirea | Valoarea implicită | Poate fi modificată | Jurnalul modificărilor |
|---|---|---|---|
| output_buffering | "0" | PHP_INI_PERDIR | |
| output_handler | NULL | PHP_INI_PERDIR | Available since PHP 4.0.4. |
| implicit_flush | "0" | PHP_INI_ALL | PHP_INI_PERDIR in PHP <= 4.2.3. |
Iată o explicație pe scurt a directivelor de configurare.
output_buffering
boolean/integer
You can enable output buffering for all files by setting this directive to 'On'. If you wish to limit the size of the buffer to a certain size - you can use a maximum number of bytes instead of 'On', as a value for this directive (e.g., output_buffering=4096). As of PHP 4.3.5, this directive is always Off in PHP-CLI.
output_handler
string
You can redirect all of the output of your scripts to a function. For example, if you set output_handler to mb_output_handler(), character encoding will be transparently converted to the specified encoding. Setting any output handler automatically turns on output buffering.
Notă:
You cannot use both mb_output_handler() with ob_iconv_handler() and you cannot use both ob_gzhandler() and zlib.output_compression.
Notă:
Only built-in functions can be used with this directive. For user defined functions, use ob_start().
implicit_flush
boolean
FALSE by default. Changing this to TRUE tells PHP to tell the
output layer to flush itself automatically after every output block.
This is equivalent to calling the PHP function
flush() after each and every call to
print or echo and each and
every HTML block.
When using PHP within an web environment, turning
this option on has serious performance implications and is generally
recommended for debugging purposes only. This value defaults to
TRUE when operating under the CLI SAPI.
See also ob_implicit_flush().