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<?php
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
namespace Thrift\StringFunc;
class Mbstring implements TStringFunc
{
public function substr($str, $start, $length = null)
{
/**
* We need to set the charset parameter, which is the second
* optional parameter and the first optional parameter can't
* be null or false as a "magic" value because that would
* cause an empty string to be returned, so we need to
* actually calculate the proper length value.
*/
if ($length === null) {
$length = $this->strlen($str) - $start;
}
return mb_substr($str, $start, $length, '8bit');
}
public function strlen($str)
{
return mb_strlen($str, '8bit');
}
}
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