Hace coincidir para el sistema de numeración decimal valores numéricos aislados, es decir, valores no unidos a otros caracteres. test: 11 +11 -11 99-99 a99 a+99 a-99 99a +99a -99a 22e22 22e+22 +22e22 +22e+22 22.22 22. .22 22.e22 22.e+22 22.22e22 22.22e+22 .22e22 .22e+22 88e 88e+ e88 e+88 88e88.

Pick third section

HI

/** comments */ // to the end /* comments */

Match all filenames in any URL including those with ANSI escaped characters (PHP version).

Useful for forum moderators looking to flag variations of the word "pharmafia" in comments. captures the following variations: pharmafia ph4rm4f14 phar_mafia phar-mafia

Matches any valid cfx.re/join/ links.

Python program to match if two words from a list of words starting with letter 'P'.

从元素解析视频URL

12/10/1991

Remove ANSI escape codes

parses property strings as used by iCalendar. Kinda.

Wrap word in json with quotes

测试贪婪/非贪婪模式

分组引用

In the first capturing group, match any character that isn't a newline, then, match a newline, then, in a non-capturing group, match a newline. Replace the the entire matched sequence with contents of the first capturing group followed by a space.

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Phone number

the decimal, double point with range number from minus to plus range number, the example from -199.99 to 199.99 revision from example pattern 1: ^(?:\-?10(?:\.\d\d?)?|\-?[1]?[1-9]?0-9?)$

re to validate x/(x+b)=(dx)/a like 7/(x+9) = (4x)/3