PHP;"> { "require": { "monolog/monolog": "1.*" } }

PHP;"> PHP composer.phar install

PHP;"> require '/path/to/vendor/autoload.PHP';

pushHandler(new StreamHandler('/path/to/log/log_name.log',Logger::WARNING)); // add records to the log $log->addWarning('Foo'); $log->addError('Bar');

PHP;"> { "autoload": { "psr-4": { "Foo\\": "src/",} } }

PHP;"> { "autoload": { "psr-0": { "Foo\\": "src/",} } }

PHP;"> { "autoload": { "classmap": ["src/","lib/","Something.PHP"] } }

PHP;"> { "autoload": { "files": ["src/MyLibrary/functions.PHP"] } }

PHP;"> $path) { $loader->set($namespace,$path); } $map = require __DIR__ . '/autoload_psr4.PHP'; foreach ($map as $namespace => $path) { $loader->setPsr4($namespace,$path); } $classMap = require __DIR__ . '/autoload_classmap.PHP'; if ($classMap) { $loader->addClassMap($classMap); } $loader->register(true); $includeFiles = require __DIR__ . '/autoload_files.PHP'; foreach ($includeFiles as $file) { composerRequire73612b48e6c3d0de8d56e03dece61d11($file); } return $loader; } } function composerRequire73612b48e6c3d0de8d56e03dece61d11($file) { require $file; }

classMap) { $this->classMap = array_merge($this->classMap,$classMap); } else { $this->classMap = $classMap; } } /** * Registers a set of PSR-0 directories for a given prefix,* replacing any others prevIoUsly set for this prefix. * * @param string $prefix The prefix * @param array|string $paths The PSR-0 base directories */ public function set($prefix,$paths) { if (!$prefix) { $this->fallbackDirsPsr0 = (array) $paths; } else { $this->prefixesPsr0[$prefix[0]][$prefix] = (array) $paths; } } /** * Registers a set of PSR-4 directories for a given namespace,* replacing any others prevIoUsly set for this namespace. * * @param string $prefix The prefix/namespace,with trailing '\\' * @param array|string $paths The PSR-4 base directories * * @throws \InvalidArgumentException */ public function setPsr4($prefix,$paths) { if (!$prefix) { $this->fallbackDirsPsr4 = (array) $paths; } else { $length = strlen($prefix); if ('\\' !== $prefix[$length - 1]) { throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator."); } $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length; $this->prefixDirsPsr4[$prefix] = (array) $paths; } } /** * Registers this instance as an autoloader. * * @param bool $prepend Whether to prepend the autoloader or not */ public function register($prepend = false) { spl_autoload_register(array($this,'loadClass'),$prepend); } /** * Loads the given class or interface. * * @param string $class The name of the class * @return bool|null True if loaded,null otherwise */ public function loadClass($class) { if ($file = $this->findFile($class)) { includeFile($file); return true; } } /** * Finds the path to the file where the class is defined. * * @param string $class The name of the class * * @return string|false The path if found,false otherwise */ public function findFile($class) { //这是PHP5.3.0 - 5.3.2的一个bug 详见https://bugs.PHP.net/50731 if ('\\' == $class[0]) { $class = substr($class,1); } // class map 方式的查找 if (isset($this->classMap[$class])) { return $this->classMap[$class]; } //psr-0/4方式的查找 $file = $this->findFileWithExtension($class,'.PHP'); // Search for Hack files if we are running on HHVM if ($file === null && defined('HHVM_VERSION')) { $file = $this->findFileWithExtension($class,'.hh'); } if ($file === null) { // Remember that this class does not exist. return $this->classMap[$class] = false; } return $file; } private function findFileWithExtension($class,$ext) { // PSR-4 lookup $logicalPathPsr4 = strtr($class,'\\',DIRECTORY_SEPARATOR) . $ext; $first = $class[0]; if (isset($this->prefixLengthsPsr4[$first])) { foreach ($this->prefixLengthsPsr4[$first] as $prefix => $length) { if (0 === strpos($class,$prefix)) { foreach ($this->prefixDirsPsr4[$prefix] as $dir) { if (file_exists($file = $dir . DIRECTORY_SEPARATOR . substr($logicalPathPsr4,$length))) { return $file; } } } } } // PSR-4 fallback dirs foreach ($this->fallbackDirsPsr4 as $dir) { if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr4)) { return $file; } } // PSR-0 lookup if (false !== $pos = strrpos($class,'\\')) { // namespaced class name $logicalPathPsr0 = substr($logicalPathPsr4,$pos + 1) . strtr(substr($logicalPathPsr4,$pos + 1),'_',DIRECTORY_SEPARATOR); } else { // PEAR-like class name $logicalPathPsr0 = strtr($class,DIRECTORY_SEPARATOR) . $ext; } if (isset($this->prefixesPsr0[$first])) { foreach ($this->prefixesPsr0[$first] as $prefix => $dirs) { if (0 === strpos($class,$prefix)) { foreach ($dirs as $dir) { if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) { return $file; } } } } } // PSR-0 fallback dirs foreach ($this->fallbackDirsPsr0 as $dir) { if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) { return $file; } } // PSR-0 include paths. if ($this->useIncludePath && $file = stream_resolve_include_path($logicalPathPsr0)) { return $file; } }

/**

• Scope isolated include.
• Prevents access to $this/self from included files.
  */
  function includeFile($file)
  {
  include $file;
  }