--- /dev/null
+<?php
+/*
+ * This file is part of PHPUnit.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Constraint that asserts that the string it is evaluated for matches
+ * a regular expression.
+ *
+ * Checks a given value using the Perl Compatible Regular Expression extension
+ * in PHP. The pattern is matched by executing preg_match().
+ *
+ * The pattern string passed in the constructor.
+ *
+ * @since Class available since Release 3.0.0
+ */
+class PHPUnit_Framework_Constraint_PCREMatch extends PHPUnit_Framework_Constraint
+{
+ /**
+ * @var string
+ */
+ protected $pattern;
+
+ /**
+ * @param string $pattern
+ */
+ public function __construct($pattern)
+ {
+ parent::__construct();
+ $this->pattern = $pattern;
+ }
+
+ /**
+ * Evaluates the constraint for parameter $other. Returns true if the
+ * constraint is met, false otherwise.
+ *
+ * @param mixed $other Value or object to evaluate.
+ *
+ * @return bool
+ */
+ protected function matches($other)
+ {
+ return preg_match($this->pattern, $other) > 0;
+ }
+
+ /**
+ * Returns a string representation of the constraint.
+ *
+ * @return string
+ */
+ public function toString()
+ {
+ return sprintf(
+ 'matches PCRE pattern "%s"',
+ $this->pattern
+ );
+ }
+}