PHP preg_replace Tester -- Sinister Circuits

Inputs:

Delimiter Char:
Case insensitive Multiline Unicode

preg_replace()
preg_filter()
preg_split()

PREG_SPLIT_NO_EMPTY
PREG_SPLIT_DELIM_CAPTURE
PREG_SPLIT_OFFSET_CAPTURE

Target Text:
Pattern:
Replacement:
Hint: Use $n where 'n' = 1, 2, 3, ... to access parenthesized matches [e.g. $1$2 $3]. The resultant string will appear in the "Formatted Text:" box if the Pattern produces one or more matches.
Example:
    Target Text: "One foo too many" [All check boxes unchecked]
    Pattern: "^([A-Z][a-z]+)\s[fo]{3,3}\s([a-z]+)\s([a-z]+).*$"
    Replacement: "$1 $2 $3"
    Formatted Text: "One too many"

Output:

# of Replacements: 0

Formatted Text [Matches applied to Replacements]:

Error:

Search String: [Click in box to select text -- makes it easier to copy to clipboard ;) ]:

Regular Expression Tester

Inputs:

Output: