PHP ob_start() Funksie
Voorbeeld
Skep 'n uitsetbuffer:
<?php
ob_start();
echo "This content will not be sent to the
browser.";
ob_end_clean();
echo "This content will be sent to the
browser.";
?>
Definisie en gebruik
Die ob_start()
funksie skep 'n uitsetbuffer. 'n Terugbelfunksie kan deurgegee word om verwerking op die inhoud van die buffer te doen voordat dit uit die buffer gespoel word. Vlae kan gebruik word om toe te laat of te beperk wat die buffer in staat is om te doen.
Sintaksis
ob_start(callback, chunk_size, flags);
Parameterwaardes
Parameter | Description | ||||||
---|---|---|---|---|---|---|---|
callback | Optional. A callback used to process the contents of the buffer before it gets flushed. The callback function should have the following parameters:
|
||||||
chunk_size | Optional. Defaults to 0. When set to a value greater than zero, the buffer will automatically be flushed as soon as the length of the contents exceeds this value | ||||||
flags | Optional. Defaults to PHP_OUTPUT_HANDLER_STDFLAGS. A bitmask which determines what operations the buffer is permitted to do. It may contain the following flags: PHP_OUTPUT_HANDLER_CLEANABLE - Calls to ob_clean(), ob_end_clean() and ob_get_clean() are permitted. PHP_OUTPUT_HANDLER_FLUSHABLE - Calls to ob_flush(), ob_end_flush() and ob_get_flush() are permitted. PHP_OUTPUT_HANDLER_REMOVABLE - Calls to ob_end_clean(), ob_end_flush() and ob_get_flush() are permitted. PHP_OUTPUT_HANDLER_STDFLAGS - Equivalent to PHP_OUTPUT_HANDLER_CLEANABLE| PHP_OUTPUT_HANDLER_FLUSHABLE| PHP_OUTPUT_HANDLER_REMOVABLE |
Tegniese besonderhede
Terugkeerwaarde: | WAAR oor sukses, ONWAAR oor mislukking |
---|---|
PHP weergawe: | 4+ |
❮ PHP-uitsetbeheerfunksies