gzputs
<?php
//Extracting the content of a gzip file in php and creating a new csv file using the content
//Create a folder uploads inside current folder
$local_file = 'test.gz';
//To Get the size of the uncompressed file
$FileRead = $local_file;
$FileOpen = fopen($FileRead, "rb");
fseek($FileOpen, -4, SEEK_END);
$buf = fread($FileOpen, 4);
$GZFileSize = end(unpack("V", $buf));
fclose($FileOpen);
//To Get the size of the zip file
$fzip_size = $GZFileSize;
$filename = $local_file;
$ext = pathinfo($filename,PATHINFO_EXTENSION);
$file_name = pathinfo($filename,PATHINFO_FILENAME);
$file_name = $file_name.".csv";
$zd = gzopen($filename, "rb");
$contents = gzread($zd, $fzip_size);
gzclose($zd);
$file_name = "uploads/".$file_name;
$fp = fopen($file_name, "wb");
fwrite($fp, $contents); //write contents of feed to cache file
fclose($fp);
if(file_exists($file_name))
{
chmod($file_name,0755);
unlink($local_file);
}
?>
gzread
(PHP 4, PHP 5)
gzread — Binary-safe gz-file read
Description
string gzread
( resource $zp
, int $length
)
gzread() reads up to length bytes from the given gz-file pointer. Reading stops when length (uncompressed) bytes have been read or EOF is reached, whichever comes first.
Parameters
- zp
-
The gz-file pointer. It must be valid, and must point to a file successfully opened by gzopen().
- length
-
The number of bytes to read.
Return Values
The data that have been read.
Examples
Example #1 gzread() example
<?php
// get contents of a gz-file into a string
$filename = "/usr/local/something.txt.gz";
$zd = gzopen($filename, "r");
$contents = gzread($zd, 10000);
gzclose($zd);
?>
add a note
User Contributed Notesgzread
robinv12001 at yahoo dot co dot in
11-Jun-2009 06:21
11-Jun-2009 06:21
robinv12001 at yahoo dot co dot in
09-Jun-2009 11:18
09-Jun-2009 11:18
<?php
//Using FTP Download a gzip file on current date from a remote server
//The gzip files are extracted
function parse_rawlist( $array )
{
$i=0;
foreach($array as $curraw)
{
$struc = array();
$current = preg_split("/[\s]+/",$curraw,9);
$struc['perms'] = $current[0];
$struc['number'] = $current[1];
$struc['owner'] = $current[2];
$struc['group'] = $current[3];
$struc['size'] = $current[4];
$struc['month'] = $current[5];
$struc['day'] = $current[6];
$struc['time'] = $current[7];
$struc['zfile_name'] = $current[8];
$structure[$i] = $struc;
$i++;
}
return $structure;
}
ini_set('memory_limit', '100M');
//Give FTP Information Here
//------------------------------------------------------------
$ftp_server = "example.com";
$ftp_user_name = "example";
$ftp_user_pass = "test";
//------------------------------------------------------------
//------------------------------------------------------------
$local_path = '/opt/lampp/htdocs/sample/test.gz';//Local Path
$server_path = 'outgoing/folder/';//Remote Sever Path
//------------------------------------------------------------
$conn_id = ftp_connect($ftp_server,21);
if($conn_id)
{
echo "Successfully connected";
}
$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass);
ftp_chdir($conn_id, $server_path);//Change Current Working Directory
$file_list = ftp_rawlist($conn_id,".");
$zip_details = parse_rawlist($file_list);
set_time_limit(1000);
$curr_date = strtotime(date("F d Y"));
for($i=0;$i<count($zip_details);$i++)
{
$fname = $zip_details[$i]['zfile_name'];
$mod_date1 = $zip_details[$i]['month']." ".$zip_details[$i]['day']." ".date("Y");
$mod_date = strtotime($mod_date1);//File Modified Date
if($mod_date == $curr_date)//If modified date equals current date
{
$local_file = $fname;
$server_file = $fname;
if (ftp_get($conn_id, $local_file, $server_file, FTP_BINARY))
{
echo "<br/>Successfully written to $local_file\n";
}
else
{
echo "<br/>There was a problem\n";
}
if(file_exists($local_file))
{
$fzip_size = $zip_details[$i]['size'];
$filename = $local_file;
$ext = pathinfo($filename,PATHINFO_EXTENSION);
$file_name = pathinfo($filename,PATHINFO_FILENAME);
$file_name = $file_name.".csv";
$zd = gzopen($filename, "r");
$contents = gzread($zd, $fzip_size);
$file_name = "uploads/".$file_name;
file_put_contents($file_name,addslashes($contents));
if(file_exists($file_name))
{
chmod($file_name,0755);
unlink($local_file);
}
gzclose($zd);
}
}
}
ftp_close($conn_id);
?>
utku
08-Feb-2008 10:31
08-Feb-2008 10:31
I don't think it would be wise to open a whole gzip file (it _is_ compressed for a reason, and likely to be a very big file) into a single string. You would most likely hit the php memory limits. Instead, if you need to process the file, put your gzread calls in a loop, and read incrementally by a setting $length to a constant value.
zaotong at yahoo dot com
08-Mar-2007 12:06
08-Mar-2007 12:06
As was shown to me in another forum there is a way to get the uncompressed size of the gz file by viewing the last 4 bytes of the gz file.
Here is a piece of code that will do this
<?php
$FileRead = 'SomeText.txt';
$FileOpen = fopen($FileRead, "rb");
fseek($FileOpen, -4, SEEK_END);
$buf = fread($FileOpen, 4);
$GZFileSize = end(unpack("V", $buf));
fclose($FileOpen);
$HandleRead = gzopen($FileRead, "rb");
$ContentRead = gzread($HandleRead, $GZFileSize);
?>
This will read the last 4 bytes of the gz file and use it as the file int for the gzread.
Thanks to stereofrog for helping me with this code.
methatron at hotmail dot com
27-Sep-2006 09:33
27-Sep-2006 09:33
Be aware that gzread's second parameter - length reffers to the file's uncompressed size, therefore using this code:
<?php
$file_name = "/usr/local/something.txt.gz";
if($file_handle = gzopen($file_name, "r"))
{
$contents = gzread($file_handle, filesize($file_name));
gzclose($file_name);
}
?>
will probably truncate the content of the file as filesize checks for the file's compressed size.
So either use the actual uncompressed size, if you know it, or use an aribtrary big enough length, as gzreading will stop at the end of the file anyway.