gzwrite

(PHP 4, PHP 5, PHP 7, PHP 8)

gzwriteBinary-safe gz-file write

说明

gzwrite(resource $stream, string $data, ?int $length = null): int|false

gzwrite() writes the contents of data to the given gz-file.

参数

stream

The gz-file pointer. It must be valid, and must point to a file successfully opened by gzopen().

data

The string to write.

length

The number of uncompressed bytes to write. If supplied, writing will stop after length (uncompressed) bytes have been written or the end of data is reached, whichever comes first.

返回值

Returns the number of (uncompressed) bytes written to the given gz-file stream, 或者在失败时返回 false.

更新日志

版本 说明
8.0.0 length is nullable now; previously, the default was 0.
7.4.0 This functions returns false on failure now; previously 0 was returned.

范例

示例 #1 gzwrite() example

<?php
$string 
'Some information to compress';
$gz gzopen('somefile.gz','w9');
gzwrite($gz$string);
gzclose($gz);
?>

参见