How to check if code is being executed inside eval()?

Question

How to check, if a line of code, that is actually being executed runs from inside of eval() function? Did anyone have to deal with something like this?

You could override the default eval function, see docs here php.net/manual/en/function.override-function.php — cmorrissey
– cmorrissey, Commented Jul 15, 2016 at 16:04
var_dump() works perfectly fine in eval(). Problem is that I have to distinguish, if a library is being executed from inside an eval() while running. I've tried the global variable solution, but inside eval() you've got an access to the same variables as from outside. — Kamil Szymański
– Kamil Szymański, Commented Jul 16, 2016 at 15:57
worse case: looking through the the stack trace to see where the eval was called from? xdebug has some useful functions for this - I was using them just the other day. You have xdebug active? — Ryan Vincent
– Ryan Vincent, Commented Jul 16, 2016 at 16:52
XDebug is not an option. But I didn't consider the stack trace, seems like a reasonable approach. — Kamil Szymański
– Kamil Szymański, Commented Jul 16, 2016 at 17:39
@RyanVincent Thanks for your input! With your help I found the solution (see accepted answer). — Kamil Szymański
– Kamil Szymański, Commented Jul 20, 2016 at 9:18

Community · Accepted Answer · 2017-05-23 12:08:17Z

1

I'd like to thank Ryan Vincent for his advice!

function is_eval() { $debug = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS); foreach ($debug as $step => $trace) { // ignore class calls if (isset($trace['class'])) { continue; } if (isset($trace['function']) && 'eval' === $trace['function']) { return true; } } }

edited May 23, 2017 at 12:08

CommunityBot

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answered Jul 20, 2016 at 9:17

Kamil Szymański

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1 Comment

Leandro Jacques Over a year ago

How does it work? When should I call is_eval function? It's not very clear to me.

Mokky Miah · Accepted Answer · 2016-07-15 15:48:05Z

0

Put this in your eval function.

debug_to_console( "Code ran" );

answered Jul 15, 2016 at 15:48

Mokky Miah

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