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php_api.php
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php_api.php
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<?php
# MantisBT - A PHP based bugtracking system
# MantisBT is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# MantisBT is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with MantisBT. If not, see <http://www.gnu.org/licenses/>.
/**
* PHP Compatibility API
*
* Provides functions to assist with backwards compatibility between PHP
* versions.
*
* @package CoreAPI
* @subpackage PHPCompatibilityAPI
* @copyright Copyright 2000 - 2002 Kenzaburo Ito - kenito@300baud.org
* @copyright Copyright 2002 MantisBT Team - mantisbt-dev@lists.sourceforge.net
* @link http://www.mantisbt.org
*/
/**
* Constant for our minimum required PHP version
*/
define( 'PHP_MIN_VERSION', '5.5.0' );
/**
* Determine if PHP is running in CLI or CGI mode and return the mode.
* @return int PHP mode
*/
function php_mode() {
static $s_mode = null;
if( is_null( $s_mode ) ) {
# Check to see if this is CLI mode or CGI mode
if( isset( $_SERVER['SERVER_ADDR'] )
|| isset( $_SERVER['LOCAL_ADDR'] )
|| isset( $_SERVER['REMOTE_ADDR'] ) ) {
$s_mode = PHP_CGI;
} else {
$s_mode = PHP_CLI;
}
}
return $s_mode;
}
/**
* Returns true if the current PHP version is higher than the one
* specified in the given string
* @param string $p_version_string Version string to compare.
* @return boolean
*/
function php_version_at_least( $p_version_string ) {
static $s_cached_version;
if( isset( $s_cached_version[$p_version_string] ) ) {
return $s_cached_version[$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 ) {
$s_cached_version[$p_version_string] = false;
return false;
} else if( $t_cur > $t_min ) {
$s_cached_version[$p_version_string] = true;
return true;
}
}
# if we get here, the versions must match exactly so:
$s_cached_version[$p_version_string] = true;
return true;
}
# If mb_* not defined, define it to map to standard methods.
if( !function_exists( 'mb_substr' ) ) {
/**
* Map mb_substr to utf8_substr if mb extension is not found
* @param string $p_text Text string.
* @param integer $p_index Start position.
* @param integer $p_size Size.
* @return string
*/
function mb_substr( $p_text, $p_index, $p_size ) {
return utf8_substr( $p_text, $p_index, $p_size );
}
}