Regular Expressions 101

Group 1(<p><img.+class=\")

<p><imgthe literal text <p><img (case sensitive)

.+any character (except for line terminators), repeated at least once

class=the literal text class= (case sensitive)

\"the literal " (34₁₀ / 42₈ / 22₁₆)

Group 2(classIWantToMatch)

classIWantToMatchthe literal text classIWantToMatch (case sensitive)

Group 3(\".+<\/p>)

\"the literal " (34₁₀ / 42₈ / 22₁₆)

.+any character (except for line terminators), repeated at least once

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

p>the literal text p> (case sensitive)

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

(<p><img.+class=\")(classIWantToMatch)(\".+<\/p>)

New

<p><img class="classIWantToMatch" src="data:image/gif;base64,dataForImage"></p>
<p><img src="data:image/gif;base64,imageData" class="classIWantToMatch" ></p>
<p><img src="/myFiles/my.PNG" alt=""></p>

Regular Expression

Substitution