Regular Expressions: Difference between revisions

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(Created page with "Regular expressions are a powerful method of defining number ranges. They are used in several part of the system. Here some examples: {| class="wikitable" |- ! Regexp !! Desc...")
 
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| ^055[1-9] || Matches any digits from 1 to 9  || 0551234 || 0550345
| ^055[1-9] || Matches any digits from 1 to 9  || 0551234 || 0550345
| ^1?800 || Matches any number starting by 1 or not, ending with 800 || 1800, 800 ||
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Revision as of 14:47, 17 August 2017

Regular expressions are a powerful method of defining number ranges. They are used in several part of the system. Here some examples:

Regexp Description Matches Not Matches
^05545$ Set start and end of string 05545 055453131
^05545 Matches anything starting with 05545 0554531 0554566 5545 055
05545$ Matches anything ending with 05545 998705545 055453
^055.* Matches anything starting with 055 05545 99055
^0558*99 Matches anything starting with 055 and with zero or more 8 and ending by 99 05588899

05599 ||

^0557+ Matches anything starting with 055 and with one or more 7 05577 0557 055
^0558?987 Matches one or zero 8 inside the number 0558987 055987 0558999
05546)99 Matches either sequences 0554599 0554699 0554799
^055(45)*99 Matches zero or more instances of the sequences 055454599 0554599 05599 05544599
^0559{3}8 Matches a sequence of three 9 0559998 05599
^0559{2,3}8 Matches from two to three sequence of 9 055998 0559998 05599998
^055[1-9] Matches any digits from 1 to 9 0551234 0550345 ^1?800 Matches any number starting by 1 or not, ending with 800 1800, 800