VII. Compression functions
This module uses the functions of zlib by Jean-loup Gailly and Mark Adler to
transparently read and write gzip (.gz) compressed files. You have
to use a zlib version >= 1.0.9 with this module.
This module contains versions of most of the filesystem functions which work
with gzip-compressed files (and uncompressed files, too, but not
with sockets).
Opens a temporary file and writes a test string to it, then it
prints out the content of this file twice.
Example 1. Small Zlib example 1
2 <?php
3 $filename = tempnam('/tmp', 'zlibtest').'.gz';
4 print "<html>\n<head></head>\n<body>\n<pre>\n";
5 $s = "Only a test, test, test, test, test, test, test, test!\n";
6 // open file for writing with maximum compression
7 $zp = gzopen($filename, "w9");
8 // write string to file
9 gzwrite($zp, $s);
10 // close file
11 gzclose($zp);
12 // open file for reading
13 $zp = gzopen($filename, "r");
14 // read 3 char
15 print gzread($zp, 3);
16 // output until end of the file and close it.
17 gzpassthru($zp);
18 print "\n";
19 // open file and print content (the 2nd time).
20 if (readgzfile($filename) != strlen($s)) {
21 echo "Error with zlib functions!";
22 }
23 unlink($filename);
24 print "<pre>\n</h1></body>\n</html>\n";
25 ?>
26 |
|
- Table of Contents
- gzclose — close an open gz-file pointer
- gzeof — test for end-of-file on a gz-file pointer
- gzfile — read entire gz-file into an
array
- gzgetc — get character from gz-file pointer
- gzgets — get line from file pointer
- gzgetss — get line from gz-file pointer and strip HTML tags
- gzopen — open gz-file
- gzpassthru — output all remaining data on a gz-file pointer
- gzputs — write to a gz-file pointer
- gzread — Binary-safe gz-file read
- gzrewind — rewind the position of a gz-file pointer
- gzseek — seek on a gz-file pointer
- gztell — tell gz-file pointer read/write position
- gzwrite — Binary-safe gz-file write
- readgzfile — output a gz-file
