I am eager to ask a php question online. thank you!

I am eager to ask a php question online. thank you! Function number ($ str)
{
Preg_replace ('/\ D/S', '', $ str );

} Echo number ('text mosquito 38 ');

The extracted number $ asd = preg_replace ('/\ D/S', '', $ str); cannot be obtained.

Reply to discussion (solution)

Urgent request ~~~ Please help me.

Because your function does not return values.

Function number ($ str)
{
Return preg_replace ('/\ D/S', '', $ str );
}

Function number ($ str)
{
Return preg_replace ('/\ D/S', '', $ str );
}

Dear Moderator, how can I output the number 38 to $ asd = 38?

The function has no return value.

Function number ($ str)
{
Return preg_replace ('/\ D/S', '', $ str );
}

Dear Moderator, how can I output the number 38 to $ asd = 38? Is it the number after $ asd gets the output?

The function has no return value.

Can you perform the following operations? Return preg_replace ('/\ D/S', '', $ str); then I got a number, but how can I make $ asd = 38? Is it the number after $ asd gets the output?

Function number ($ str)
{
Return preg_replace ('/\ D/S', '', $ str );

}
$ Asd = number ('text mosquito 38 ');
Echo $ asd;

Function number ($ str)
{
Return preg_replace ('/\ D/S', '', $ str );

}
$ Asd = number ('text mosquito 38 ');
Echo $ asd;

Thank you !!!!!!!