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Initial commit
Functional, without SSO
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226
sources/lib/Log4php/helpers/LoggerOptionConverter.php
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226
sources/lib/Log4php/helpers/LoggerOptionConverter.php
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<?php
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/**
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @package log4php
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*/
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/**
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* A convenience class to convert property values to specific types.
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*
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* @version $Revision: 1374617 $
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* @package log4php
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* @subpackage helpers
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* @since 0.5
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*/
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class LoggerOptionConverter {
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/** String values which are converted to boolean TRUE. */
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private static $trueValues = array('1', 'true', 'yes', 'on');
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/**
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* String values which are converted to boolean FALSE.
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*
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* Note that an empty string must convert to false, because
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* parse_ini_file() which is used for parsing configuration
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* converts the value _false_ to an empty string.
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*/
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private static $falseValues = array('0', 'false', 'no', 'off', '');
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/**
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* Read a predefined var.
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*
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* It returns a value referenced by <var>$key</var> using this search criteria:
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* - if <var>$key</var> is a constant then return it. Else
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* - if <var>$key</var> is set in <var>$_ENV</var> then return it. Else
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* - return <var>$def</var>.
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*
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* @param string $key The key to search for.
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* @param string $def The default value to return.
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* @return string the string value of the system property, or the default
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* value if there is no property with that key.
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*/
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public static function getSystemProperty($key, $def) {
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if(defined($key)) {
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return (string)constant($key);
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} else if(isset($_SERVER[$key])) {
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return (string)$_SERVER[$key];
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} else if(isset($_ENV[$key])) {
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return (string)$_ENV[$key];
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} else {
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return $def;
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}
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}
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/** Converts $value to boolean, or throws an exception if not possible. */
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public static function toBooleanEx($value) {
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if (isset($value)) {
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if (is_bool($value)) {
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return $value;
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}
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$value = strtolower(trim($value));
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if (in_array($value, self::$trueValues)) {
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return true;
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}
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if (in_array($value, self::$falseValues)) {
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return false;
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}
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}
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throw new LoggerException("Given value [" . var_export($value, true) . "] cannot be converted to boolean.");
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}
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/**
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* Converts $value to integer, or throws an exception if not possible.
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* Floats cannot be converted to integer.
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*/
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public static function toIntegerEx($value) {
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if (is_integer($value)) {
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return $value;
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}
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if (is_numeric($value) && ($value == (integer) $value)) {
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return (integer) $value;
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}
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throw new LoggerException("Given value [" . var_export($value, true) . "] cannot be converted to integer.");
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}
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/**
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* Converts $value to integer, or throws an exception if not possible.
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* Floats cannot be converted to integer.
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*/
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public static function toPositiveIntegerEx($value) {
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if (is_integer($value) && $value > 0) {
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return $value;
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}
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if (is_numeric($value) && ($value == (integer) $value) && $value > 0) {
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return (integer) $value;
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}
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throw new LoggerException("Given value [" . var_export($value, true) . "] cannot be converted to a positive integer.");
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}
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/** Converts the value to a level. Throws an exception if not possible. */
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public static function toLevelEx($value) {
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if ($value instanceof LoggerLevel) {
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return $value;
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}
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$level = LoggerLevel::toLevel($value);
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if ($level === null) {
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throw new LoggerException("Given value [" . var_export($value, true) . "] cannot be converted to a logger level.");
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}
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return $level;
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}
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/**
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* Converts a value to a valid file size (integer).
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*
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* Supports 'KB', 'MB' and 'GB' suffixes, where KB = 1024 B etc.
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*
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* The final value will be rounded to the nearest integer.
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*
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* Examples:
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* - '100' => 100
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* - '100.12' => 100
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* - '100KB' => 102400
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* - '1.5MB' => 1572864
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*
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* @param mixed $value File size (optionally with suffix).
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* @return integer Parsed file size.
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*/
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public static function toFileSizeEx($value) {
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if (empty($value)) {
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throw new LoggerException("Empty value cannot be converted to a file size.");
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}
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if (is_numeric($value)) {
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return (integer) $value;
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}
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if (!is_string($value)) {
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throw new LoggerException("Given value [" . var_export($value, true) . "] cannot be converted to a file size.");
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}
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$str = strtoupper(trim($value));
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$count = preg_match('/^([0-9.]+)(KB|MB|GB)?$/', $str, $matches);
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if ($count > 0) {
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$size = $matches[1];
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$unit = $matches[2];
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switch($unit) {
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case 'KB': $size *= pow(1024, 1); break;
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case 'MB': $size *= pow(1024, 2); break;
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case 'GB': $size *= pow(1024, 3); break;
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}
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return (integer) $size;
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}
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throw new LoggerException("Given value [$value] cannot be converted to a file size.");
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}
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/**
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* Converts a value to string, or throws an exception if not possible.
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*
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* Objects can be converted to string if they implement the magic
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* __toString() method.
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*
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*/
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public static function toStringEx($value) {
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if (is_string($value)) {
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return $value;
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}
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if (is_numeric($value)) {
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return (string) $value;
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}
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if (is_object($value) && method_exists($value, '__toString')) {
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return (string) $value;
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}
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throw new LoggerException("Given value [" . var_export($value, true) . "] cannot be converted to string.");
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}
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/**
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* Performs value substitution for string options.
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*
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* An option can contain PHP constants delimited by '${' and '}'.
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*
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* E.g. for input string "some ${FOO} value", the method will attempt
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* to substitute ${FOO} with the value of constant FOO if it exists.
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*
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* Therefore, if FOO is a constant, and it has value "bar", the resulting
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* string will be "some bar value".
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*
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* If the constant is not defined, it will be replaced by an empty string,
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* and the resulting string will be "some value".
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*
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* @param string $string String on which to perform substitution.
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* @return string
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*/
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public static function substConstants($string) {
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preg_match_all('/\${([^}]+)}/', $string, $matches);
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foreach($matches[1] as $key => $match) {
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$match = trim($match);
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$search = $matches[0][$key];
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$replacement = defined($match) ? constant($match) : '';
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$string = str_replace($search, $replacement, $string);
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}
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return $string;
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}
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}
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