xml_set_processing_instruction_handler
(PHP 4, PHP 5, PHP 7, PHP 8)
xml_set_processing_instruction_handler — Set up processing instruction (PI) handler
Beschreibung
Sets the processing instruction (PI) handler function for the XML parser
parser.
A processing instruction has the following format:
<?
?>
?>) can not be quoted,
so this character sequence should not appear in the PHP code you embed
with PIs in XML documents.If it does, the rest of the PHP code, as well
as the "real" PI end tag, will be treated as character data.
Parameter-Liste
-
parser -
A reference to the XML parser to set up processing instruction (PI) handler function.
-
handler -
handleris a string containing the name of a function that must exist when xml_parse() is called forparser.The function named by
handlermust accept three parameters:-
parser - The first parameter, parser, is a reference to the XML parser calling the handler.
-
target -
The second parameter,
target, contains the PI target. -
data -
The third parameter,
data, contains the PI data.
If a handler function is set to an empty string, or
false, the handler in question is disabled.Hinweis: Anstelle eines Funktionsnamens kann auch ein Array mit einer Objekt-Referenz und dem Namen einer Methode angegeben werden.
-
Rückgabewerte
Gibt bei Erfolg true zurück. Bei einem Fehler wird false zurückgegeben.
