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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Db\Helper; |
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use function addslashes; |
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use function is_float; |
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use function mb_strrpos; |
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use function mb_strtolower; |
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use function mb_substr; |
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use function preg_match; |
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use function preg_replace; |
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use function rtrim; |
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use function str_replace; |
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use function trim; |
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/** |
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* String manipulation methods. |
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*/ |
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final class DbStringHelper |
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{ |
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/** |
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* Returns the trailing name part of a path. |
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* |
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* This method is similar to the php function `basename()` except that it will treat both \ and / as directory |
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* separators, independent of the operating system. |
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* |
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* This method was mainly created to work on php namespaces. When working with real file paths, PHP's `basename()` |
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* should work fine for you. |
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* |
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* Note: this method isn't aware of the actual filesystem, or path components such as "..". |
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* |
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* @param string $path A path string. |
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* |
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* @return string The trailing name part of the given path. |
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* |
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* @link https://www.php.net/manual/en/function.basename.php |
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*/ |
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public static function baseName(string $path): string |
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{ |
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$path = rtrim(str_replace('\\', '/', $path), '/'); |
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$position = mb_strrpos($path, '/'); |
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if ($position !== false) { |
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return mb_substr($path, $position + 1); |
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} |
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return $path; |
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} |
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/** |
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* Returns a value indicating whether an SQL statement is for read purpose. |
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* |
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* @param string $sql The SQL statement. |
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* |
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* @return bool Whether an SQL statement is for read purpose. |
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*/ |
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public static function isReadQuery(string $sql): bool |
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{ |
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$pattern = '/^\s*(SELECT|SHOW|DESCRIBE)\b/i'; |
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return preg_match($pattern, $sql) === 1; |
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} |
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/** |
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* Returns string representation of a number value without a thousand separators and with dot as decimal separator. |
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* |
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* @param float|string $value The number value to be normalized. |
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*/ |
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public static function normalizeFloat(float|string $value): string |
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{ |
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if (is_float($value)) { |
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$value = (string) $value; |
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} |
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$value = str_replace([' ', ','], ['', '.'], $value); |
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return preg_replace('/\.(?=.*\.)/', '', $value); |
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} |
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/** |
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* Converts a PascalCase name into an ID in lowercase. |
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* |
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* Words in the ID may be concatenated using '_'. For example, 'PostTag' will be converted to 'post_tag'. |
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* |
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* @param string $input The string to be converted. |
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* |
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* @return string The resulting ID. |
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*/ |
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public static function pascalCaseToId(string $input): string |
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{ |
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$separator = '_'; |
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$result = preg_replace('/(?<=\p{L})(?<!\p{Lu})(\p{Lu})/u', addslashes($separator) . '\1', $input); |
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return mb_strtolower(trim($result, $separator)); |
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} |
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} |
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yiisoft /
db
