phpbashhttp-redirectechorun-script

Php echo with redirect for minicom script

I'm actually trying to "create" a script file (like script.sh) with php.

I get phone number by php request on previous page.

I got the script working in runscript but i need it to be "dynamic", so here is a part of my script working in bash :

$tel = 34000000000    
echo "\"OK\"" > /script_minicom/script_$tel   
echo "send AT+CMGS=\"+$tel\" \r" >> /script_minicom/script_$tel

Here is the output :

"OK"
send AT+CMGS="+34000000000" \r

Name of the file

/script_minicom/script_34000000000

But i need it working with PHP (to get phone number) so i'm trying this :

$tel = $_POST['tel'];
exec("echo '\"OK\"' > /script_minicom/script_$tel");
exec("echo send AT+CMGS=\"+$tel\" '\r' >> /script_minicom/script_$tel");

It works for the first line but the 2nd make my "\r" disapear and $tel isn't surrounded by quotes (can't work wihtout them) :

"OK"
send AT+CMGS=+34000000000

Name of the file :

/script_minicom/script_34000000000
Solution

  • \r inside double quotes gets interpolated as a carriage return in PHP. Use single quotes around it

    exec("echo send AT+CMGS=\"+$tel" .'" \r'. " >> /script_minicom/script_$tel");

    Output

    send AT+CMGS="+34000000000" \r