<?php
	# Mantis - a php based bugtracking system
	# Copyright (C) 2000 - 2002  Kenzaburo Ito - kenito@300baud.org
	# Copyright (C) 2002 - 2004  Mantis Team   - mantisbt-dev@lists.sourceforge.net
	# This program is distributed under the terms and conditions of the GPL
	# See the README and LICENSE files for details

	# --------------------------------------------------------
	# $Id: php_api.php,v 1.18 2005/06/08 22:04:05 vboctor Exp $
	# --------------------------------------------------------

	### PHP Compatibility API ###

	# Functions to help in backwards compatibility of PHP versions, etc.

	# cache array of comparisons
	$g_cached_version = array();

	# --------------------
	# Returns true if the current PHP version is higher than the one
	#  specified in the given string
	function php_version_at_least( $p_version_string ) {
		global $g_cached_version;

		if ( isset( $g_cached_version[$p_version_string] ) ) {
			return $g_cached_version[$p_version_string];
		}

		$t_curver = array_pad( explode( '.', phpversion() ), 3, 0 );
		$t_minver = array_pad( explode( '.', $p_version_string ), 3, 0 );

		for ($i = 0 ; $i < 3 ; $i = $i + 1 ) {
			$t_cur = (int)$t_curver[$i];
			$t_min = (int)$t_minver[$i];

			if ( $t_cur < $t_min ) {
				$g_cached_version[$p_version_string] = false;
				return false;
			} else if ( $t_cur > $t_min ) {
				$g_cached_version[$p_version_string] = true;
				return true;
			}
		}

		# if we get here, the versions must match exactly so:
		$g_cached_version[$p_version_string] = true;
		return true;
	}

?>