Basic RegEx to catch ITU E.164 Formatted Telephone Numbers. Must include leading '+', first digit cannot be a zero, no other non-numeric characters -- with (optional) exception of Extensions denoted by ";ext=" and between 3 and 6 digits in the extension (adjust max to suit organization)

This regular expression checks for below rules: Must not have special characters except a dash sign Must not start with a dash sign or white space Must not end with a dash sign or white space Must not have a dash sign or white space in sequence

ผลิตภัณฑ์ส่งเสริมการขาย

8k realese

Port https://regex101.com/library/cX0pJ8 to PCRE2 (PHP >= 7.3)

to validate email

a word is anything valid within a parens (like in a function), but the function itself should not be matched a word may have a numeric at the end or the start there is no guarantee of a single space (or ANY space other than some operators)

Match all numbers from a string.

This regex will match when people ping someone or ping a group it will also match when people mention a channel for non-channel catching type use ``

frac

remove currency symbol, remove commas

String doesn't start or end with . - '

haowei.ch

smargs not margins

csc

Date2 (Notes)

e

Ejemplo del uso de grupos lookahead

Numeric value without decimal

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