abdurrhman abdurrhman - 6 months ago 9
PHP Question

How to get all dollar sings and the text after it in a string in PHP

A marc 21 tag may content a line with several dollar signs $ like:

$string='10$athis is text a$bthis is text b/$cthis is text$dthis is text d';


I tried to match all the dollar sings and get the text after each sing, my code is:

preg_match_all("/\\$[a-z]{1}(.*?)/", $string, $match);


the output is:

Array
(
[0] => Array
(
[0] => $a
[1] => $b
[2] => $c
[3] => $d
)

[1] => Array
(
[0] =>
[1] =>
[2] =>
[3] =>
)

)


How can capture the text after each sing so the output will be:

Array
(
[0] => Array
(
[0] => $a
[1] => $b
[2] => $c
[3] => $d
)

[1] => Array
(
[0] => this is text a
[1] => this is text b/
[2] => this is text c
[3] => this is text d
)

)

Answer

You can use positive lookahead for matching \$ literally or end of string like

(\$[a-z]{1})(.*?)(?=\$|$)

Regex Demo

PHP Code

$re = "/(\\$[a-z]{1})(.*?)(?=\\$|$)/"; 
$str = "10\$athis is text a\$bthis is text b/\$cthis is text\$dthis is text d"; 
preg_match_all($re, $str, $matches);

Ideone Demo

NOTE :- Your required result is in Array[1] and Array[2]. Array[0] is reserved for match found by entire regex.