Expresiones Regulares Analítica Web

Posicionamiento SEO  Madrid

Expresiones Regulares Analítica Web

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Expresiones Regulares Analítica Web

Anchors Sample Patterns ^ Start of line + ([A-Za-z0-9-]+) Letters, numbers and hyphens End of line + ([^\s]+(?=\.(jpg|gif|png))\.\2) jpg, gif or png image \A Start of string + \Z End of string + $ \b Word boundary + \B Not word boundary + \< Start of word \> End of word Character Classes \c Control character \S Not white space \s White space \d Digit \D Not digit \w \W \Oxxx [:cntrl:] [:graph:] [:print:] Lower case letters Digits and letters Digits ?? {3} {3,} {3,5} {3,5}? 0 or 1, ungreedy + Exactly 3 + 3 or more + 3, 4 or 5 + 3, 4 or 5, ungreedy + Special Characters Blank characters \r Carriage return + Control characters Printed characters Printed characters and Lookbehind assertion + Note ? 1 or more, ungreedy + Escape Character + ?<= ?# +? 0 or more, ungreedy + \ Space and tab Lookahead assertion + ?()| *? Punctuation ?= ?() Ranges (?:...) Assertions ?> Quantifiers 0 or 1 + underscore ?!= or ?<! These patterns are intended for reference purposes and have not been extensively tested. Please use with caution and test thoroughly before use. a or b + Digits, letters and ?! HTML Tags (a|b) spaces [:word:] Email addresses 1 or more + Hexadecimal digits [:space:] and one digit (useful for passwords). + All letters [:blank:] Note upper case letter, one lower case letter, Hexadecimal character hh [:alpha:] [:punct:] (\<(/?[^\>]+)\>) 8 to 15 character string with at least one Any character except Upper case letters [:xdigit:] (\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,6}) Valid hexadecimal colour code . [:upper:] [:digit:] ((?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{8,15}) Any number from 1 to 50 inclusive 0 or more + POSIX Character Classes [:alnum:] (#?([A-Fa-f0-9]){3}(([A-Fa-f0-9]){3})?) * Octal character xxx [:lower:] (^[1-9]{1}$|^[1-4]{1}[0-9]{1}$|^50$) Date (e.g. 21/3/2006) Word Not word \xhh (\d{1,2}\/\d{1,2}\/\d{4}) \n \t \v \f \a [\b] \e \N{name} New line + Tab + Vertical tab + Named Character "xyz" in /^(?:abc)(xyz)$/ Comment Items marked + should work in most regular expression implementations. $+ $& $_ $$ \n Note Upper case letter + between A and Q + Digit between 0 and 7 + nth group/subpattern + Ranges are inclusive. Pattern Modifiers Multiple lines Escape $1 Condition [if then else] [0-7] Letter between a and q + m Negative lookbehind + $' [A-Q] Not a or b or c + Backspace nth non-passive group $` [a-q] Range (a or b or c) + Global match $n Condition [if then] [^abc] Passive Group + g Alarm Negative lookahead + Once-only Subexpression [abc] Group + Form feed + String Replacement (Backreferences) $2 (...) new line (\n) + "xyz" in /^(abc(xyz))$/ i Case-insensitive s Treat string as single line x Allow comments and white space in pattern e Evaluate replacement U Ungreedy pattern Metacharacters (must be escaped) Before matched string ^ [ . Last matched string ( \ + After matched string Entire matched string Entire input string Literal "$" $ ) < { | > Available free from AddedBytes.com * ?

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Expresiones Regulares Analítica Web

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