PHP Manual
streamWrapper
Truncate stream

streamWrapper::stream_truncate

(PHP 5 >= 5.4.0, PHP 7)

streamWrapper::stream_truncate — Truncate stream

说明

public streamWrapper::stream_truncate ( int $new_size ) : bool

Will respond to truncation, e.g., through ftruncate().

参数

new_size: The new size.

返回值

成功时返回 TRUE，或者在失败时返回 FALSE。

参见

ftruncate() - 将文件截断到给定的长度

相关文章

php direct io 函数 opens a file creating it if necessary at a lower level than the c library input/ouput stream functions allow php imap 函数 check if the imap stream is still active php stream context options callback when executing killcursor operations php stream context options callback when reading the mongodb reply php stream 函数 attach a filter to a stream php stream 函数为资源流设置阻塞或者阻塞模式 php stream 函数 restores a previously unregistered built in wrapper php yaml 函数 parse a yaml stream php 手册 stream context options php streamwrapper constructs a new stream wrapper php streamwrapper destructs an existing stream wrapper php streamwrapper tests for end of file on a file pointer php streamwrapper flushes the output php streamwrapper change stream metadata php streamwrapper read from stream php streamwrapper seeks to specific location in a stream php streamwrapper change stream options php streamwrapper retrieve the current position of a stream php streamwrapper truncate stream php streamwrapper write to stream

关注编程学问公众号