Description:
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The Warning: level message that is triggered by preg_replace() when the pattern is a string, but the replacement is an array has one or two typos: "in" instead of "is", and a full stop that looks out of place.

Reproduce code:
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<?php

$pattern = "/foo/";
$replacement = array('bar','baz');
$string = "Womble";

preg_replace($pattern, $replacement, $string);
?>



Expected result:
----------------
Warning: preg_replace(): Parameter mismatch, pattern is a string while replacement is an array in C:\test.php on line 8

Actual result:
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Warning: preg_replace(): Parameter mismatch, pattern is a string while replacement in an array. in C:\test.php on line 8