php call standard function by string

Question

I need to call a PHP standard function from a string

Example:

$param = "parameter";
$functionname = "createimagefromjpg";
//call the function (with a parameter)

Anyone has an idea how I can do this? It can't be done with call_user_func() because it is a standard function.

possible duplicate of How to call PHP function from string stored in a Variable — Michael Mrozek
– Michael Mrozek, Commented May 20, 2010 at 16:04

Michael Mrozek · Accepted Answer · 2010-05-20 16:03:32Z

5

$functionname($param);

answered May 20, 2010 at 16:03

Michael Mrozek

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Comments

JasonMichael · Accepted Answer · 2010-05-20 17:32:52Z

-1

Correction, ok I thought this would work:

$$functionname($param);

but it does not.... the example with one dollar sign works for functions. Nice.

edited May 20, 2010 at 17:32

answered May 20, 2010 at 17:26

JasonMichael

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1 Comment

Michael Mrozek Over a year ago

$$name is to find a variable whose name is stored in name, so if you had $foo = "bar"; $bar = "baz"; and you wanted to call baz(), you could do $bar() or $$foo()

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