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In PHP is it possible to use a function inside a variable

Answer 1

+18 A:

Function calls within strings are supported since PHP5 by having a variable containing the name of the function to call:

<?
function somefunc($stuff)
{
    $output = "<b>{$stuff}</b>";
    return $output;
}
$somefunc='somefunc';
echo "foo {$somefunc("bar")} baz";
?>

will output "foo <b>bar</b> baz".

I find it easier however (and this works in PHP4) to either just call the function outside of the string:

<?
echo "foo " . somefunc("bar") . " baz";
?>

or assign to a temporary variable:

<?
$bar = somefunc("bar");
echo "foo {$bar} baz";
?>

Jason Weathered 2008-09-13 08:45:42

I guess that works, but I'd never do that.It's screaming bad practice. Think about code readability etc.. Come back to your code in six months and figure out all the function calls inside your HTML markup.

Till 2008-09-13 08:57:36

Answer 2

+1 A:

"bla bla bla".function("blub")." and on it goes"

MattW. 2008-09-13 08:46:27

Answer 3

A:

Expanding a bit on what Jason W said:

I find it easier however (and this works in PHP4) to either just call the 
function outside of the string:

<?
echo "foo " . somefunc("bar") . " baz";
?>

You can also just embed this function call directly in your html, like:

<?

function get_date() {
        $date = `date`;
        return $date;
}

function page_title() {
        $title = "Today's date is: ". get_date() ."!";
        echo "$title";
}

function page_body() {
        $body = "Hello";
        $body = ",  World!";
        $body = "\n
\n";
        $body = "Today is: " . get_date() . "\n";
}

?>
<html>
        <head>
                <title><? page_title(); ?></title>
        </head>
        <body>
                <? page_body(); ?>
        </body>
</html>

Tim Kennedy 2008-09-14 11:00:57

example assumes you have short tags enabled

Allain Lalonde 2008-09-15 02:15:36

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In PHP is it possible to use a function inside a variable

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