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Back references Posted by admin (Graham Ellis), 8 June 2007 Question How do I refer back to part of a match in a regular expression - i.e. how do I ask "and the same character of group of characters again"?Answer Use a back reference. Capture the part that you might want to repeat in round brackets, the refer back to it later on as \1 - i.e. back reference number 1. Here's a regular expression that matches a string that ends with the same character that it starts with: /^(.).*\1$/ Link - Full Worked Example This page is a thread posted to the opentalk forum
at www.opentalk.org.uk and
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follow this link.
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