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POInterface 'Psr\Log\LoggerInterface' not found in /opt/lampp/vhosts/development.com/htdocs/test/Monolog/Logger.php
 

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  1. POInterface 'Psr\Log\LoggerInterface' not found in /opt/lampp/vhosts/development.com/htdocs/test/Monolog/Logger.php
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    <p>I am trying to execute basic example of monolog. I have tried follwing code.</p> <p>My index.php file is</p> <pre><code> &lt;?php include_once __DIR__ . '/Psr/Log/LoggerInterface'; include_once __DIR__ . '/Psr/Log/AbstractLogger'; include_once __DIR__ . '/Psr/Log/LogLevel'; include_once __DIR__ . '/Psr/Log/InvalidArgumentException'; include_once __DIR__ . '/Monolog/Logger.php'; include_once __DIR__ . '/Monolog/Handler/HandlerInterface.php'; include_once __DIR__ . '/Monolog/Handler/AbstractHandler.php'; include_once __DIR__ . '/Monolog/Handler/AbstractProcessingHandler.php'; include_once __DIR__ . '/Monolog/Handler/StreamHandler.php'; include_once __DIR__ . '/Monolog/Formatter/FormatterInterface.php'; include_once __DIR__ . '/Monolog/Formatter/NormalizerFormatter.php'; include_once __DIR__ . '/Monolog/Formatter/LineFormatter.php'; use Monolog\Logger; use Monolog\Handler\StreamHandler; $logger = new Logger("my_name"); $logger-&gt;pushHandler(new StreamHandler("test_log.log", Logger::DEBUG)); $log-&gt;addWarning('Foo'); $log-&gt;addError('Bar'); ?&gt; </code></pre> <p>I am getting following error </p> <pre><code>Fatal error: Interface 'Psr\Log\LoggerInterface' not found in /opt/lampp/vhosts/development.com/htdocs/test/Monolog/Logger.php on line 28 </code></pre> <p>My folder structure is </p> <pre><code>/opt/lampp/vhosts/development.com/htdocs/test /opt/lampp/vhosts/development.com/htdocs/test/Monolog /opt/lampp/vhosts/development.com/htdocs/test/Psr /opt/lampp/vhosts/development.com/htdocs/test/index.php </code></pre> <p>Could you please suggest me about this. Thanks in advance.</p>
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    1. USEswara Reddy
    1. USEswara Reddy
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    1. COFor this Psr files I am getting following error Warning: include_once(/opt/lampp/vhosts/development.com/htdocs/test/Psr/Log/LoggerInterface): failed to open stream: No such file or directory in /opt/lampp/vhosts/development.com/htdocs/test/index.php on line 2
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      1. POInterface 'Psr\Log\LoggerInterface' not found in /opt/lampp/vhosts/development.com/htdocs/test/Monolog/Logger.php
      1. USEswara Reddy
    2. COModern components / libraries are designed to be loaded by an autoloading mechanism. Have a look at composer, composer is an dependency manager which comes with an autoloader. To handle such components without autoloading would be a long trip to hell.
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      1. POInterface 'Psr\Log\LoggerInterface' not found in /opt/lampp/vhosts/development.com/htdocs/test/Monolog/Logger.php
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    3. COYes I have done with composer. Thanks @tr0y
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      1. POInterface 'Psr\Log\LoggerInterface' not found in /opt/lampp/vhosts/development.com/htdocs/test/Monolog/Logger.php
      1. USEswara Reddy
 

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