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<?php |
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/** |
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* Spiral Framework. |
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* |
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* @license MIT |
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* @author Anton Titov (Wolfy-J) |
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*/ |
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namespace Spiral\Database\Entities; |
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use Spiral\Database\Injections\ParameterInterface; |
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/** |
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* Simple helper class used to interpolate query with given values. To be used for profiling and |
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* debug purposes only, unsafe SQL are generated! |
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*/ |
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class QueryInterpolator |
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{ |
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/** |
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* Helper method used to interpolate SQL query with set of parameters, must be used only for |
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* development purposes and never for real query. |
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* |
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* @param string $query |
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* @param array $parameters Parameters to be binded into query. |
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* @return mixed |
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*/ |
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public static function interpolate($query, array $parameters = []) |
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{ |
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if (empty($parameters)) { |
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return $query; |
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} |
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//Flattening first |
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$parameters = self::flattenParameters($parameters); |
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//Let's prepare values so they looks better |
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foreach ($parameters as &$parameter) { |
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$parameter = self::prepareParameter($parameter); |
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unset($parameter); |
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} |
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reset($parameters); |
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if (!is_int(key($parameters))) { |
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//Associative array |
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return \Spiral\interpolate($query, $parameters, '', ''); |
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} |
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foreach ($parameters as $parameter) { |
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$query = preg_replace('/\?/', $parameter, $query, 1); |
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} |
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return $query; |
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} |
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/** |
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* Flatten all parameters into simple array. |
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* |
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* @param array $parameters |
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* @return array |
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*/ |
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protected static function flattenParameters(array $parameters) |
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{ |
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$flatten = []; |
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foreach ($parameters as $parameter) { |
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if ($parameter instanceof ParameterInterface) { |
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$flatten = array_merge($flatten, $parameter->flatten()); |
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continue; |
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} |
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if (is_array($parameter)) { |
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$flatten = array_merge($flatten, $parameter); |
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} |
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$flatten[] = $parameter; |
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} |
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return $flatten; |
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} |
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/** |
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* Normalize parameter value to be interpolated. |
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* |
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* @param mixed $parameter |
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* @return string |
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*/ |
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protected static function prepareParameter($parameter) |
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{ |
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if ($parameter instanceof ParameterInterface) { |
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return self::prepareParameter($parameter->getValue()); |
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} |
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switch (gettype($parameter)) { |
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case "boolean": |
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return $parameter ? 'true' : 'false'; |
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case "integer": |
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return $parameter + 0; |
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case "NULL": |
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return 'NULL'; |
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case "double": |
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return sprintf('%F', $parameter); |
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case "string": |
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return "'" . addcslashes($parameter, "'") . "'"; |
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case 'object': |
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if (method_exists($parameter, '__toString')) { |
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return "'" . addcslashes((string)$parameter, "'") . "'"; |
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} |
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} |
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return "[UNRESOLVED]"; |
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} |
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} |
spiral /
components
