php_user_filter::onCreate

(PHP 5, PHP 7)

php_user_filter::onCreate — Called when creating the filter

说明

public php_user_filter::onCreate ( void ) : bool

This method is called during instantiation of the filter class object. If your filter allocates or initializes any other resources (such as a buffer), this is the place to do it.

When your filter is first instantiated, and yourfilter->onCreate() is called, a number of properties will be available as shown in the table below.

Property	Contents
FilterClass->filtername	A string containing the name the filter was instantiated with. Filters may be registered under multiple names or under wildcards. Use this property to determine which name was used.
FilterClass->params	The contents of the `params` parameter passed to stream_filter_append() or stream_filter_prepend().
FilterClass->stream	The stream resource being filtered. Maybe available only during filter() calls when the closing parameter is set to `FALSE`.

参数

此函数没有参数。

返回值

Your implementation of this method should return FALSE on failure, or TRUE on success.

php arrayobject sort the entries with a user defined comparison function and maintain key association php streams the php user filter class php firebird/interbase 函数 delete a user from a security database php firebird/interbase 函数 register a callback function to be called when events are posted php ncurses 函数 forces output when ncurses slk noutrefresh is performed php newt 函数 set a callback function which gets invoked when user presses the suspend key php posix 函数 return info about a user by user id php stream 函数 register a user defined stream filter php sybase 函数 sets the handler called when a server message is raised php uopz 函数 sets hook to execute when entering a function or method php vpopmail 函数 sets a virtual user s quota php imagick adds vignette filter to the image php imagickdraw sets the opacity to use when drawing using the fill color or fill texture php imagickdraw specifies the shape to be used at the end of open subpaths when they are stroked php php user filter called when applying the filter php php user filter called when closing the filter php php user filter called when creating the filter php filter 过滤器函数 php sdo das relational 函数 returns the special root object in an otherwise empty data graph. used when creating a data graph from scratch php solrquery whether to highlight phrase terms only when they appear within the query phrase