#17 PHP version requirements fix

In adodb-xmlschema.inc.php on line 1732, you use the
function file_get_contents.

That pushes the php version requirements up to 4.3+,
far beyond the requirements of adodb itself.

While it only triggers when the schema version doesnt
match the current schema version for adodb-xmlschema,
its still a requirement escalation.

I recommend following the suggestion in the user
comments at
http://us2.php.net/manual/en/function.file-get-contents.php
, and adding a function check and if its not available,
making a backwards-compatible replacement (code is
included at that site).

Its only 6 additional lines of code, and it puts
adodb-xmlschema back to the same requirements as adodb,
as far as I can tell.

[Richard Tango-Lowy]

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Good suggestion. I'll take a look at it.

[Andrew Eddie]

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Use this function from the PEAR PHP_Compat project:

/**
* Replace file_get_contents()
*
* @category PHP
* @package PHP_Compat
* @link http://php.net/function.file_get_contents
* @author Aidan Lister <aidan@php.net>
* @version $Revision: 1.2 $
* @internal resource_context is not supported
* @since PHP 5
* @require PHP 4.0.1 (trigger_error)
*/
if (!function_exists('file_get_contents')) {
function file_get_contents($filename, $incpath = false,
$resource_context = null)
{
if (false === $fh = fopen($filename, 'rb', $incpath)) {
trigger_error('file_get_contents() failed to
open stream: No such file or directory', E_USER_WARNING);
return false;
}

clearstatcache();
if ($fsize = @filesize($filename)) {
$data = fread($fh, $fsize);
} else {
$data = '';
while (!feof($fh)) {
$data .= fread($fh, 8192);
}
}

fclose($fh);
return $data;
}
}

[Anonymous]

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eddie, that code (the PHP_Compat code) is under the PHPL,
whereas the code I referenced is public domain. Since the
PHPL isn't compatible with the license for adodb (its far
more restrictive), its better to simply use the code I
referenced. Plus, its smaller. :)