Common Regular Expressions

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Integer

[0-9]+

Comma-delimited integer

\b[0-9]{1,3}(,[0-9]{3})*\b

Floating point number

(\+?(\d+|\.\d+|\d+\.\d+)|-?(\d+|\d+\.\d+))

The number between 0-255

^([0-9]|[0-9]{2}|1[0-9]{2}|2[0-4][0-9]|25[0-5])$ 

Id

^[1-9]\d{14}(\d{2}[0-9x])?$ 

Mailbox

^[-\w.]{0,64}@([a-zA-Z0-9]{1,63}\.)*[-a-zA-Z0-9]{1,63}$

Fixed telephone

(\(?0[1-9]{2,3}\)?-?)?[1-9][0-9]\{6,7}(-[0-9]{1,6})? 

Zip

[1-9][0-9]{5} 

Isbn

((ISBN(-13)?:?\s)?97[89][-\s]?[0-9][-\s]?[0-9]{3}[-\s]?[0-9]{5}[-\s]?[0-9]|(ISBN(-10)?:?\s)?[0-9][-\s]?[0-9]{3}[-\s]?[0-9]{5}[-\s]?[0-9x])

``

Phone number

(0|\+86)?(13[0-9]|15[0-356]|18[025-9])\d{8} 

Paired HTML tag

Such as<code>test</code>

<([^>]+)>[\s\S]*?<\/\1>

A

<a\s+href\s*=\s*["‘]?([^"‘\s]+)["‘]?>([^<]+)<\/a>

Head

Image

]*?src=[‘"]?([^"‘]+)["‘]?[^>]*>

Common Regular Expressions