--- /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 contains
+ * a given string.
+ *
+ * Uses strpos() to find the position of the string in the input, if not found
+ * the evaluation fails.
+ *
+ * The sub-string is passed in the constructor.
+ *
+ * @since Class available since Release 3.0.0
+ */
+class PHPUnit_Framework_Constraint_StringContains extends PHPUnit_Framework_Constraint
+{
+ /**
+ * @var string
+ */
+ protected $string;
+
+ /**
+ * @var bool
+ */
+ protected $ignoreCase;
+
+ /**
+ * @param string $string
+ * @param bool $ignoreCase
+ */
+ public function __construct($string, $ignoreCase = false)
+ {
+ parent::__construct();
+
+ $this->string = $string;
+ $this->ignoreCase = $ignoreCase;
+ }
+
+ /**
+ * 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)
+ {
+ if ($this->ignoreCase) {
+ return stripos($other, $this->string) !== false;
+ } else {
+ return strpos($other, $this->string) !== false;
+ }
+ }
+
+ /**
+ * Returns a string representation of the constraint.
+ *
+ * @return string
+ */
+ public function toString()
+ {
+ if ($this->ignoreCase) {
+ $string = strtolower($this->string);
+ } else {
+ $string = $this->string;
+ }
+
+ return sprintf(
+ 'contains "%s"',
+ $string
+ );
+ }
+}