I have the following string:
findByHouseByStreetByPlain
How can I match to values after each "By". I have managed to find the first "By" value, but I can't get it going that it gives me all the matches for the value after "By".
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4 Answers
Thsi regex should work for you:
<?php
$ptn = "#(?:By([A-Za-z]+?))(?=By|$)#";
$str = "findByByteByHouseNumber";
preg_match_all($ptn, $str, $matches, PREG_PATTERN_ORDER);
print_r($matches);
?>
this will be the output:
Array
(
[0] => Array
(
[0] => ByByte
[1] => ByHouseNumber
)
[1] => Array
(
[0] => Byte
[1] => HouseNumber
)
)
3 Comments
buckley
Can work but remember that this regex only matches if the string starts with a capital and is followed by small caps. For example, findByHouSeByStreet will not match
SERPRO
Well that's how it is supposed to be written in camel-case.. for more complex examples..
buckley
I interpreted that the seperator is "By"
Some use of lookahead will do it
By(.*?)(?=By|$)
In php this become
preg_match_all('/By(.*?)(?=By|$)/', $subject, $result, PREG_SET_ORDER);
for ($matchi = 0; $matchi < count($result); $matchi++) {
for ($backrefi = 0; $backrefi < count($result[$matchi]); $backrefi++) {
# Matched text = $result[$matchi][$backrefi];
}
}
1 Comment
buckley
Just add some grouping if you want to extract submatches
Try this code below:
$pattern = "/[^By]+/";
$string = "findByHouseByStreetByPlain";
preg_match_all($pattern, $string, $matches);
var_dump($matches);
my string is different:
HouseByStreetByPlain
then i use the following regex:
<?php
$ptn = "/(?<=By|^)(?:.+?)(?=(By|$))/i";
$str = "HouseByStreetByPlain";
preg_match_all($ptn, $str, $matches);
print_r($matches);
?>
output:
Array
(
[0] => Array
(
[0] => House
[1] => Street
[2] => Plain
)
[1] => Array
(
[0] => By
[1] => By
[2] =>
)
)
