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<?php |
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declare(strict_types=1); |
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namespace voku\HtmlFormValidator; |
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use voku\helper\UTF8; |
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/** |
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* Class ValidatorHelpers |
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* |
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* @internal |
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*/ |
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class ValidatorHelpers |
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{ |
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/** |
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* @param string $string |
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* |
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* @return array |
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*/ |
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public static function getArgsFromString($string): array |
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{ |
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$argsMatches = []; |
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\preg_match('/\((?<args>.*?)\)$/', $string, $argsMatches); |
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$string = (string)\preg_replace('/\((.*?)\)$/', '', $string); |
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$args = []; |
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if (isset($argsMatches['args'])) { |
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$argTmpString = $argsMatches['args']; |
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if (self::is_serialized($argTmpString, $argsTmpUnserialized)) { |
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$args = [$argsTmpUnserialized]; |
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} else { |
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$argsTmpArray = explode(',', $argTmpString); |
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foreach ($argsTmpArray as $argTmp) { |
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$arg = trim($argTmp); |
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if ($arg === 'true' || $arg === 'false') { |
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$arg = (bool)$arg; |
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} else if ($args === 'null') { |
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$arg = null; |
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} |
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$args[] = $arg; |
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} |
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} |
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} |
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return [$string, $args]; |
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} |
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/** |
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* Tests if an input is valid PHP serialized string. |
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* |
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* Checks if a string is serialized using quick string manipulation |
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* to throw out obviously incorrect strings. Unserialize is then run |
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* on the string to perform the final verification. |
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* |
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* Valid serialized forms are the following: |
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* <ul> |
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* <li>boolean: <code>b:1;</code></li> |
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* <li>integer: <code>i:1;</code></li> |
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* <li>double: <code>d:0.2;</code></li> |
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* <li>string: <code>s:4:"test";</code></li> |
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* <li>array: <code>a:3:{i:0;i:1;i:1;i:2;i:2;i:3;}</code></li> |
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* <li>object: <code>O:8:"stdClass":0:{}</code></li> |
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* <li>null: <code>N;</code></li> |
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* </ul> |
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* |
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* @author Chris Smith <[email protected]> |
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* @copyright Copyright (c) 2009 Chris Smith (http://www.cs278.org/) |
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* @license http://sam.zoy.org/wtfpl/ WTFPL |
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* |
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* @param string $value Value to test for serialized form |
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* @param mixed $result Result of unserialize() of the $value |
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* |
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* @return boolean True if $value is serialized data, otherwise false |
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*/ |
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public static function is_serialized($value, &$result = null): bool |
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{ |
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// Bit of a give away this one |
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if (!\is_string($value)) { |
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return false; |
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} |
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// Serialized false, return true. unserialize() returns false on an |
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// invalid string or it could return false if the string is serialized |
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// false, eliminate that possibility. |
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if ($value === 'b:0;') { |
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$result = false; |
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return true; |
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} |
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$length = UTF8::strlen($value); |
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$end = ''; |
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switch ($value[0]) { |
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case 's': |
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if ($value[$length - 2] !== '"') { |
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return false; |
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} |
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case 'b': |
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case 'i': |
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case 'd': |
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// This looks odd but it is quicker than isset()ing |
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$end .= ';'; |
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case 'a': |
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case 'O': |
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$end .= '}'; |
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if ($value[1] !== ':') { |
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return false; |
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} |
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3 |
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switch ($value[2]) { |
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case 0: |
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3 |
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case 1: |
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3 |
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case 2: |
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case 3: |
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1 |
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case 4: |
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1 |
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case 5: |
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case 6: |
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case 7: |
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case 8: |
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case 9: |
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break; |
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default: |
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return false; |
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} |
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case 'N': |
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$end .= ';'; |
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if ($value[$length - 1] !== $end[0]) { |
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return false; |
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} |
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break; |
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default: |
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return false; |
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} |
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/** @noinspection PhpUsageOfSilenceOperatorInspection */ |
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3 |
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if (($result = @unserialize($value, [])) === false) { |
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$result = null; |
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return false; |
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} |
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return true; |
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} |
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} |
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voku /
HtmlFormValidator
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