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<pre><code><span id="1" class="l"><a class="l" href="#1"> 1: </a><span class="xlang">&lt;?php</span>
</span><span id="2" class="l"><a class="l" href="#2"> 2: </a><span class="php-comment">/**
</span></span><span id="3" class="l"><a class="l" href="#3"> 3: </a><span class="php-comment"> * Licensed to the Apache Software Foundation (ASF) under one or more
</span></span><span id="4" class="l"><a class="l" href="#4"> 4: </a><span class="php-comment"> * contributor license agreements. See the NOTICE file distributed with
</span></span><span id="5" class="l"><a class="l" href="#5"> 5: </a><span class="php-comment"> * this work for additional information regarding copyright ownership.
</span></span><span id="6" class="l"><a class="l" href="#6"> 6: </a><span class="php-comment"> * The ASF licenses this file to You under the Apache License, Version 2.0
</span></span><span id="7" class="l"><a class="l" href="#7"> 7: </a><span class="php-comment"> * (the &quot;License&quot;); you may not use this file except in compliance with
</span></span><span id="8" class="l"><a class="l" href="#8"> 8: </a><span class="php-comment"> * the License. You may obtain a copy of the License at
</span></span><span id="9" class="l"><a class="l" href="#9"> 9: </a><span class="php-comment"> *
</span></span><span id="10" class="l"><a class="l" href="#10">10: </a><span class="php-comment"> * http://www.apache.org/licenses/LICENSE-2.0
</span></span><span id="11" class="l"><a class="l" href="#11">11: </a><span class="php-comment"> *
</span></span><span id="12" class="l"><a class="l" href="#12">12: </a><span class="php-comment"> * Unless required by applicable law or agreed to in writing, software
</span></span><span id="13" class="l"><a class="l" href="#13">13: </a><span class="php-comment"> * distributed under the License is distributed on an &quot;AS IS&quot; BASIS,
</span></span><span id="14" class="l"><a class="l" href="#14">14: </a><span class="php-comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
</span></span><span id="15" class="l"><a class="l" href="#15">15: </a><span class="php-comment"> * See the License for the specific language governing permissions and
</span></span><span id="16" class="l"><a class="l" href="#16">16: </a><span class="php-comment"> * limitations under the License.
</span></span><span id="17" class="l"><a class="l" href="#17">17: </a><span class="php-comment"> *
</span></span><span id="18" class="l"><a class="l" href="#18">18: </a><span class="php-comment"> * @package log4php
</span></span><span id="19" class="l"><a class="l" href="#19">19: </a><span class="php-comment"> */</span>
</span><span id="20" class="l"><a class="l" href="#20">20: </a>
</span><span id="21" class="l"><a class="l" href="#21">21: </a><span class="php-comment">/**
</span></span><span id="22" class="l"><a class="l" href="#22">22: </a><span class="php-comment"> * The LoggerMDC class provides _mapped diagnostic contexts_.
</span></span><span id="23" class="l"><a class="l" href="#23">23: </a><span class="php-comment"> *
</span></span><span id="24" class="l"><a class="l" href="#24">24: </a><span class="php-comment"> * A Mapped Diagnostic Context, or MDC in short, is an instrument for
</span></span><span id="25" class="l"><a class="l" href="#25">25: </a><span class="php-comment"> * distinguishing interleaved log output from different sources. Log output
</span></span><span id="26" class="l"><a class="l" href="#26">26: </a><span class="php-comment"> * is typically interleaved when a server handles multiple clients
</span></span><span id="27" class="l"><a class="l" href="#27">27: </a><span class="php-comment"> * near-simultaneously.
</span></span><span id="28" class="l"><a class="l" href="#28">28: </a><span class="php-comment"> *
</span></span><span id="29" class="l"><a class="l" href="#29">29: </a><span class="php-comment"> * This class is similar to the {@link LoggerNDC} class except that
</span></span><span id="30" class="l"><a class="l" href="#30">30: </a><span class="php-comment"> * it is based on a map instead of a stack.
</span></span><span id="31" class="l"><a class="l" href="#31">31: </a><span class="php-comment"> *
</span></span><span id="32" class="l"><a class="l" href="#32">32: </a><span class="php-comment"> * @version $Revision: 1343630 $
</span></span><span id="33" class="l"><a class="l" href="#33">33: </a><span class="php-comment"> * @since 0.3
</span></span><span id="34" class="l"><a class="l" href="#34">34: </a><span class="php-comment"> * @package log4php
</span></span><span id="35" class="l"><a class="l" href="#35">35: </a><span class="php-comment"> */</span>
</span><span id="36" class="l"><a class="l" href="#36">36: </a><span class="php-keyword1">class</span> <a id="LoggerMDC" href="#LoggerMDC">LoggerMDC</a> {
</span><span id="37" class="l"><a class="l" href="#37">37: </a>
</span><span id="38" class="l"><a class="l" href="#38">38: </a> <span class="php-comment">/** Holds the context map. */</span>
</span><span id="39" class="l"><a class="l" href="#39">39: </a> <span class="php-keyword1">private</span> <span class="php-keyword1">static</span> <span class="php-var"><a id="$map" href="#$map">$map</a></span> = <span class="php-keyword1">array</span>();
</span><span id="40" class="l"><a class="l" href="#40">40: </a>
</span><span id="41" class="l"><a class="l" href="#41">41: </a> <span class="php-comment">/**
</span></span><span id="42" class="l"><a class="l" href="#42">42: </a><span class="php-comment"> * Stores a context value as identified with the key parameter into the
</span></span><span id="43" class="l"><a class="l" href="#43">43: </a><span class="php-comment"> * context map.
</span></span><span id="44" class="l"><a class="l" href="#44">44: </a><span class="php-comment"> *
</span></span><span id="45" class="l"><a class="l" href="#45">45: </a><span class="php-comment"> * @param string $key the key
</span></span><span id="46" class="l"><a class="l" href="#46">46: </a><span class="php-comment"> * @param string $value the value
</span></span><span id="47" class="l"><a class="l" href="#47">47: </a><span class="php-comment"> */</span>
</span><span id="48" class="l"><a class="l" href="#48">48: </a> <span class="php-keyword1">public</span> <span class="php-keyword1">static</span> <span class="php-keyword1">function</span> <a id="_put" href="#_put">put</a>(<span class="php-var">$key</span>, <span class="php-var">$value</span>) {
</span><span id="49" class="l"><a class="l" href="#49">49: </a> self::<span class="php-var">$map</span>[<span class="php-var">$key</span>] = <span class="php-var">$value</span>;
</span><span id="50" class="l"><a class="l" href="#50">50: </a> }
</span><span id="51" class="l"><a class="l" href="#51">51: </a>
</span><span id="52" class="l"><a class="l" href="#52">52: </a> <span class="php-comment">/**
</span></span><span id="53" class="l"><a class="l" href="#53">53: </a><span class="php-comment"> * Returns the context value identified by the key parameter.
</span></span><span id="54" class="l"><a class="l" href="#54">54: </a><span class="php-comment"> *
</span></span><span id="55" class="l"><a class="l" href="#55">55: </a><span class="php-comment"> * @param string $key The key.
</span></span><span id="56" class="l"><a class="l" href="#56">56: </a><span class="php-comment"> * @return string The context or an empty string if no context found
</span></span><span id="57" class="l"><a class="l" href="#57">57: </a><span class="php-comment"> * for given key.
</span></span><span id="58" class="l"><a class="l" href="#58">58: </a><span class="php-comment"> */</span>
</span><span id="59" class="l"><a class="l" href="#59">59: </a> <span class="php-keyword1">public</span> <span class="php-keyword1">static</span> <span class="php-keyword1">function</span> <a id="_get" href="#_get">get</a>(<span class="php-var">$key</span>) {
</span><span id="60" class="l"><a class="l" href="#60">60: </a> <span class="php-keyword1">return</span> <span class="php-keyword1">isset</span>(self::<span class="php-var">$map</span>[<span class="php-var">$key</span>]) ? self::<span class="php-var">$map</span>[<span class="php-var">$key</span>] : <span class="php-quote">''</span>;
</span><span id="61" class="l"><a class="l" href="#61">61: </a> }
</span><span id="62" class="l"><a class="l" href="#62">62: </a>
</span><span id="63" class="l"><a class="l" href="#63">63: </a> <span class="php-comment">/**
</span></span><span id="64" class="l"><a class="l" href="#64">64: </a><span class="php-comment"> * Returns the contex map as an array.
</span></span><span id="65" class="l"><a class="l" href="#65">65: </a><span class="php-comment"> * @return array The MDC context map.
</span></span><span id="66" class="l"><a class="l" href="#66">66: </a><span class="php-comment"> */</span>
</span><span id="67" class="l"><a class="l" href="#67">67: </a> <span class="php-keyword1">public</span> <span class="php-keyword1">static</span> <span class="php-keyword1">function</span> <a id="_getMap" href="#_getMap">getMap</a>() {
</span><span id="68" class="l"><a class="l" href="#68">68: </a> <span class="php-keyword1">return</span> self::<span class="php-var">$map</span>;
</span><span id="69" class="l"><a class="l" href="#69">69: </a> }
</span><span id="70" class="l"><a class="l" href="#70">70: </a>
</span><span id="71" class="l"><a class="l" href="#71">71: </a> <span class="php-comment">/**
</span></span><span id="72" class="l"><a class="l" href="#72">72: </a><span class="php-comment"> * Removes the the context identified by the key parameter.
</span></span><span id="73" class="l"><a class="l" href="#73">73: </a><span class="php-comment"> *
</span></span><span id="74" class="l"><a class="l" href="#74">74: </a><span class="php-comment"> * Only affects user mappings, not $_ENV or $_SERVER.
</span></span><span id="75" class="l"><a class="l" href="#75">75: </a><span class="php-comment"> *
</span></span><span id="76" class="l"><a class="l" href="#76">76: </a><span class="php-comment"> * @param string $key The key to be removed.
</span></span><span id="77" class="l"><a class="l" href="#77">77: </a><span class="php-comment"> */</span>
</span><span id="78" class="l"><a class="l" href="#78">78: </a> <span class="php-keyword1">public</span> <span class="php-keyword1">static</span> <span class="php-keyword1">function</span> <a id="_remove" href="#_remove">remove</a>(<span class="php-var">$key</span>) {
</span><span id="79" class="l"><a class="l" href="#79">79: </a> <span class="php-keyword1">unset</span>(self::<span class="php-var">$map</span>[<span class="php-var">$key</span>]);
</span><span id="80" class="l"><a class="l" href="#80">80: </a> }
</span><span id="81" class="l"><a class="l" href="#81">81: </a>
</span><span id="82" class="l"><a class="l" href="#82">82: </a> <span class="php-comment">/**
</span></span><span id="83" class="l"><a class="l" href="#83">83: </a><span class="php-comment"> * Clears the mapped diagnostic context.
</span></span><span id="84" class="l"><a class="l" href="#84">84: </a><span class="php-comment"> */</span>
</span><span id="85" class="l"><a class="l" href="#85">85: </a> <span class="php-keyword1">public</span> <span class="php-keyword1">static</span> <span class="php-keyword1">function</span> <a id="_clear" href="#_clear">clear</a>() {
</span><span id="86" class="l"><a class="l" href="#86">86: </a> self::<span class="php-var">$map</span> = <span class="php-keyword1">array</span>();
</span><span id="87" class="l"><a class="l" href="#87">87: </a> }
</span><span id="88" class="l"><a class="l" href="#88">88: </a>}
</span><span id="89" class="l"><a class="l" href="#89">89: </a></span></code></pre>
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