Can't get strtolower to work inside a preg_replace

[DrDoc]

$string = preg_replace("/(-[A-Z])/",strtolower(),$string);

I want to lowercase all letters immediately preceded by a dash. But no matter what I pass as an argument to strtolower() nothing happens...

[toadhall]

Try:

$str = preg_replace("/(-[A-Z])/e","strtolower('\\0')",$string);

/e modifier makes preg_replace() treat the replacement parameter as PHP code after the appropriate references substitution is done.

\\0 or $0 refers to the text matched by the whole pattern.

[php.net ]

T

[DrDoc]

I got it to work... The problem was a space after the - in the string :)