[mohit]

greetings to all

when i'm passing this parameter to executable and i'm catching this value in executable and i'm writing these variable value in text file via executable or say executable writting these variable value in text file. but it is not working ...

Code:

exec('search.pl $stringData $stringval',$output);
or
$output = shell_exec('search.pl $stringData $stringval');

i'm getting in return this
"$stringData$stringval" instead of it's value
where
$stringData="mohit";
$stringval=0;

can you help me where i'm going wrong.

thanks
mohit

[Nico]

Try using double quotes.

[mohit]

yes it worked but when i used like this

Code:

$output = shell_exec('search.pl $stringData $stringval');

where
$stringData=" ";
$stringval=0;

i.e. when one parameter is blank then i got problem because in exe i'm handling like this

Code:

 $q=$ARGV[0];
 $offset=$ARGV[1];

so when passing both parameter then it's ok. but in case of single..you can imagine..

so what to do now...

[UnrealEd]

just check if both vars are not empty:

PHP Code:

if(!empty(trim($stringData)) && !empty(trim($stringval))){

  shell_exec("search.pl $stringData $stringval");

} 

trim is used to remove whitespace at the beginning and at the end of a string

Greetz,
UnrealEd

[Nico]

empty() and trim() won't work together like that. You have to trim the variable outside the empty().

[UnrealEd]

Originally Posted by nico_swd

empty() and trim() won't work together like that. You have to trim the variable outside the empty().

why's that? i didn't know that

[Nico]

This is the error that PHP returns when trying to do so.

Fatal error: Can't use function return value in write context in C:\xampp\htdocs\random_scripts\empty_trim.php on line 6

Stupid thing. Would be pretty handy if it worked.

[mohit]

this thing also not working

if (!empty($stringData) && !empty($stringval))

overall mean i need to check it before calling.

[Nico]

If $stringval is set to 0, like in the example above, then empty() will return true as well. You could try this:

PHP Code:

if (trim($stringval) != '' AND trim($stringData) != '')) 

[UnrealEd]

a little too late

can you post the code you're using right now? it should work, unless you made a mistak somewhere else in your code