PHP 手册
后退前进


gzwrite

(PHP 3, PHP 4, PHP 5)

gzwrite -- Binary-safe gz-file write

说明

int gzwrite ( resource zp, string string [, int length] )

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

参数

zp

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

string

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 string is reached, whichever comes first.

注: Note that if the length argument is given, then the magic_quotes_runtime configuration option will be ignored and no slashes will be stripped from string.

返回值

Returns the number of (uncompressed) bytes written to the given gz-file stream.

范例

例子 1. gzwrite() example

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

参见

gzread()
gzopen()


add a note add a note User Contributed Notes
Kioob
13-Aug-2003 07:30
This is a short example of use gzwrite function.
<?php
function gzcompressfile($source,$level=false){
   $dest=$source.'.gz';
   $mode='wb'.$level;
   $error=false;
   if($fp_out=gzopen($dest,$mode)){
       if($fp_in=fopen($source,'rb')){
           while(!feof($fp_in))
               gzwrite($fp_out,fread($fp_in,1024*512));
           fclose($fp_in);
           }
         else $error=true;
       gzclose($fp_out);
       }
     else $error=true;
   if($error) return false;
     else return $dest;
   }
?>

the function gzcompressfile() compress a file 'data.csv' to 'data.csv.gz'. the function return false if error, and the new file name if it's ok.
add a note add a note


后退起点前进
gzuncompress上一级readgzfile