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<?php
 spl_autoload_register(function ($class) {
 
 // project-specific namespace prefix
 $prefix = 'App\\';
 
 // base directory for the namespace prefix
 $base_dir = __DIR__ . '/src/';
 
 // does the class use the namespace prefix?
 $len = strlen($prefix);
 if (strncmp($prefix, $class, $len) !== 0) {
 // no, move to the next registered autoloader
 return;
 }
 
 // get the relative class name
 $relative_class = substr($class, $len);
 
 
 // replace the namespace prefix with the base directory, replace namespace
 // separators with directory separators in the relative class name, append
 // with .php
 $file = $base_dir . str_replace('\\', '/', $relative_class) . '.php';
 
 // if the file exists, require it
 if (file_exists($file)) {
 
 require_once $file;
 }
 });
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