PHP：调用未定义的函数gzdecode（） [英] PHP: Call to undefined function gzdecode()

问题描述

  
 
 if（$ file_loc！= NULL）{
 if（file_exists（$ file_loc））{
 printf（file exists）; 
 $ handle = fopen（$ file_loc，rb）; 
 $ contents = fread（$ handle，filesize（$ file_loc））; 
 fclose（$ handle）; 
 $ result = gzdecode（$ contents）; 
 
 
  

我基本上试图从gzip中加载文本内容文件。我得到以下错误：

 致命错误：调用未定义函数gzdecode（）in ... \sites\MyScripts \fw2.php 80行
  

然而，当我看看文档，似乎并不需要包含额外的库，或者我错了？我怎样才能解决这个问题？

更新

=https://stackoverflow.com/questions/9802498/php-how-to-check-whether-a-library-has-been-properly-installed-and-enabled>问题检查是否这图书馆安装在我的电脑上，答案是肯定的，它是。

来自PHP信息：

< img src =https://i.stack.imgur.com/yEZFw.jpgalt =

所以这个越来越多了，更令人困惑... ...
$ b $ p UPDATE II

我曾尝试过：

p>

 <？php 
 
 echo phpversion（）。，; 
 
 if（function_exists（gzdecode））{
 echogzdecode OK，; 
} else {
 echogzdecode no OK，; 
} 
 
 if（extension_loaded（'zlib'））{
 echozlib extension loaded; 
} else {
 echozlib extension not loaded; 
} 
 
？> 
  

我得到：

  5.2.17，gzdecode no OK，已加载zlib扩展
  

解决方案

并不总是安装。从文档：

默认情况下，PHP中的Zlib支持未启用。您需要配置PHP --with-zlib [= DIR]

Windows的PHP版本内置了对该扩展的支持。你不需要加载任何额外的扩展名来使用这些功能。

编辑：既然这是我接受的答案，编辑它以添加建议作为替换的函数。

$ p $ 函数gzdecode（$ data）{
return gzinflate（substr（ $数据，10，-8））;
}


I am getting a strange error message with the following piece of PHP code (I am not a PHP expert):

if ( $file_loc != NULL ) {
    if ( file_exists($file_loc) ) {
        printf(" file exists");
        $handle = fopen($file_loc, "rb");
        $contents = fread($handle, filesize($file_loc));
        fclose($handle);
        $result = gzdecode($contents);
    }
}

I am basically trying to load text content from a gzipped file. I get the following error:

Fatal error: Call to undefined function gzdecode() in ...\sites\MyScripts\fw2.php on line 80

Yet, when I take a look at documentation, it does not seem like I would need to include an extra library, or am I being wrong? How can I solve this issue?

UPDATE

Following another question to check whether this library is installed on my PC, the answer is yes, it is.

From PHP info:

So this is getting more and more confusing...

UPDATE II

I have tried:

<?php

echo phpversion().", ";

if (function_exists("gzdecode")) {
  echo "gzdecode OK, ";
} else {
  echo "gzdecode no OK, ";
}

if (extension_loaded('zlib')) {
  echo "zlib extension loaded ";
} else {
  echo "zlib extension not loaded ";
}

?>

and I get:

5.2.17, gzdecode no OK, zlib extension loaded 

解决方案

It's not always installed. From the documentation:

Zlib support in PHP is not enabled by default. You will need to configure PHP --with-zlib[=DIR]

The Windows version of PHP has built-in support for this extension. You do not need to load any additional extensions in order to use these functions.

edit: Since this is the accepted answer still, I edited it to add the function suggested as replacement.

function gzdecode($data) { 
   return gzinflate(substr($data,10,-8)); 
} 

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