Regular Expressions 101

Pro

^start of line

Group 1((?:(?!<\?php echo[\s?](?:.*?)\;\s\?>).)*)

Non-Capturing Group(?:(?!<\?php echo[\s?](?:.*?)\;\s\?>).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!<\?php echo[\s?](?:.*?)\;\s\?>)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

php echothe literal text php echo (case sensitive)

Character Class[\s?]

\sany whitespace character

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

Non-Capturing Group(?:.*?)

.*?any character (except for line terminators), repeated any number of times

\;the literal ; (59₁₀ / 73₈ / 3B₁₆)

\sany whitespace character

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

.any character (except for line terminators)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

php echothe literal text php echo (case sensitive)

\sany whitespace character

Non-Capturing Group(?:.*?)

.*?any character (except for line terminators), repeated any number of times

\;the literal ; (59₁₀ / 73₈ / 3B₁₆)

Character Class[\s?]

\sany whitespace character

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 2(.*)

.*any character (except for line terminators), repeated any number of times

$end of line

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.

25 tokens

^((?:(?!<\?php echo[\s?](?:.*?)\;\s\?>).)*)<\?php echo\s(?:.*?)\;[\s?]\?>(.*)$

New

customFields[<?php echo $field['id']; ?>][type]

customFields[<?php echo $field['id']; ?>][type]