百科狗php_user_filter::onCreate() - php 流stream类
php_user_filter::onCreate()
(PHP 5, PHP 7)
Called when creating the filter
说明
publicphp_user_filter::onCreate(void): boolThis 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,andyourfilter->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$paramsparameter passed tostream_filter_append()orstream_filter_prepend(). |
| FilterClass->stream | The stream resource being filtered. Maybe available only duringfilter()calls when theclosingparameter is set toFALSE. |
参数
此函数没有参数。
返回值
Your implementation of this method should returnFALSEon failure,orTRUEon success.
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