matches a single occurrence of “w”, “o”, “r” or “d”. Square brackets look at each individual character, not whole words. will match any lowercase letter, uppercase letter, or number. (Google Analytics is case-insensitive by default.) will match any lowercase letter from a to z. You can include a long list of characters in square brackets, but it’s easier to match a range of characters with a hyphen.
Square brackets allow you to specify a variety of characters that can appear in a certain position in the string.įor example, would match either “e”, “i” or “o”. Regex can also be used to match ranges or combinations of characters. $/google.php^ won’t match anything because it’s bad regex – the caret should always be to the left of the dollar: ^/google.php$ Ranges of Characters ^car$ will only match “car” and ^$ will match only empty strings. Html$ will match “/index.html”, “/content/site.html” and “/html”, but not “/html/page.php”, “/index.htm” or “/index.html?q=html+vs+php”. It won’t match “/site/page” or “/pag/es.html”. ^/page will match “/pages.html”, “/page/site.php” and “/page”. Use a dollar sign ($) to anchor a pattern to the end. Use the caret symbol (^) to anchor a pattern to the beginning. There are anchors you can use in regex to specify that a pattern should only occur at the beginning or end. Regular expressions match the pattern you specify if they occur anywhere in the string–beginning, middle or end. If you’re unsure whether a character is a special character or not, you can escape it without any negative consequences. You can escape any special character with a backslash – even the backslash! \\
#REGEX ANY CHARACTER SERIES#
If you want to match a series of special characters in a row, just escape each one individually.
For example, \.html would match a dot followed by the string “html”. If you want to match the period character, escape it by adding a backslash before it. You accomplish this by putting a backslash just before the quesetion mark, like this: We’ll show an example of this in action later in this article.īut if you want to search a question mark, you need to “escape” the regex interpretation of the question mark. This is a thorough, but not complete, list of the special characters in regex that carry a non-literal meaning.Īs an example, the question mark means “make the previous character optional” in regex. Regular expressions use a series of special characters that carry specific meanings. For example, the following pages would be returned: Regular expressions provide a powerful and flexible way to describe what the pattern should look like, using a combination of letters, numbers, and special characters.įor example, typing html into the search box in the content reports will return all URLs that contain “html” anywhere in path. For example, you can find all pages within a subdirectory, or all pages with a query string more than ten characters long. In Google Analytics, regex can be used to find anything that matches a certain pattern. Regular expressions (also known as regex) are used to find specific patterns in a list.
#REGEX ANY CHARACTER FREE#
Please use our free regex tester to test your own regular expressions. If you want to create filters, perform searches or set up goals in Google Analytics or Angelfish Software, you need a basic understanding of regular expressions.
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