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DiffusionPhpExternalSymbolsSource.php
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			<?php

			final class DiffusionPhpExternalSymbolsSource
			extends DiffusionExternalSymbolsSource {

			public function executeQuery(DiffusionExternalSymbolQuery $query) {
			$symbols = array();

			if (!$query->matchesAnyLanguage(array('php'))) {
			return $symbols;
			}

			$names = $query->getNames();

			if ($query->matchesAnyType(array('function'))) {
			$functions = get_defined_functions();
			$functions = $functions['internal'];

			foreach ($names as $name) {
			if (in_array($name, $functions)) {
			$symbols[] = $this->buildExternalSymbol()
			->setSymbolName($name)
			->setSymbolType('function')
			->setSource(pht('PHP'))
			->setLocation(pht('Manual at php.net'))
			->setSymbolLanguage('php')
			->setExternalURI('http://www.php.net/function.'.$name);
			}
			}
			}
			if ($query->matchesAnyType(array('class'))) {
			foreach ($names as $name) {
			if (class_exists($name, false) \|\| interface_exists($name, false)) {
			if (id(new ReflectionClass($name))->isInternal()) {
			$symbols[] = $this->buildExternalSymbol()
			->setSymbolName($name)
			->setSymbolType('class')
			->setSource(pht('PHP'))
			->setLocation(pht('Manual at php.net'))
			->setSymbolLanguage('php')
			->setExternalURI('http://www.php.net/class.'.$name);
			}
			}
			}
			}

			return $symbols;
			}
			}