Regular Expressions 101

(?is)applies the following effective flags to the remainder of the pattern: gmis

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

s modifier: single line. Allows a dot to match line terminators

Non-Capturing Group(?:<option)

<optionthe literal text <option (case insensitive)

Group 1([^>]*)

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 2( value="[^"]*")

value="the literal text value=" (case insensitive)

Negated Character Class[^"]*

*matches any number of characters outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

Group 3([^>]*\>|\>)

1st Alternative[^>]*\>

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

\>the literal > (62₁₀ / 76₈ / 3E₁₆)

2nd Alternative\>

\>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 4([^>]*)

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Non-Capturing Group(?:<)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?is)(?:<option)([^>]*)( value="[^"]*")([^>]*\>|\>)([^>]*)(?:<)

New

<select id="OptionToChoose">
	<option value="" selected="selected">Choose option</option>
	<option></option>
	<option value="1" class="1">Sun</option>
	<option class="2" value="2">Earth</option>
	<option class="3" selected="selected" value="3" color="blue">Moon</option>
</select>

Regular Expression

Substitution