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otar/envirions.php

Created Mar 7, 2012
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Detect current environment and define as a global constant.
<?php
/**
* Detect current environment and define as a global constant.
* @param array $environments Associative-Array where the keys are environment
* names and it's values the URI's that should be matched. Environment URI's can
* be string or an array of strings. If no environment URI is matched sets
* current environment as a first key element of an environments array.
* @param string $constant_name Name of the constant enfironment should be
* assigned to.
* @return boolean TRUE if an environment URI was matched, FALSE otherwise.
* @author Otar Chekurishvili
* @version 1.0
* @license http://www.opensource.org/licenses/MIT The MIT License
*/
function envirions($environments = array(), $constant_name = 'ENV')
{
foreach ($environments AS $environment => $uri)
{
$current_uri = $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'];
if (is_string($uri) AND FALSE !== strpos($current_uri, $uri))
{
define($constant_name, $environment);
break;
}
elseif (is_array($uri))
{
foreach ($uri AS $sub_uri)
{
if (FALSE !== strpos($current_uri, $sub_uri))
{
define($constant_name, $environment);
break;
}
}
if (defined($constant_name))
{
break;
}
else
{
continue;
}
}
else
{
continue;
}
}
if (!defined($constant_name))
{
if (empty($environments))
{
return false;
}
else
{
$environments = array_keys($environments);
define($constant_name, $environments[0]);
}
}
return TRUE;
}
<?php
require_once 'envirions.php';
envirions(array(
'development' => array(
'localhost.com',
'local.domain'
),
'testing' => 'test.domain.com',
'production' => array(
'domain.com',
'alternative.domain.com'
)
));
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