在php中的exec中添加echo中间的新行

Question

Here is my exec command for sending email to users. I want to reformat the body of the mail by adding a newline after each App, config and counter type.

Here is the code that works but outputs everything in one line:

exec('echo "Please find attached the query result for:  App: '.$varApp.'  Config: '.$varConfig.' Counter Type: '.$varCtrType.'  Thanks!" | /bin/mail -s "Testing" -a '.$output[8].' '.$varEmail.'  2>&1', $output2 );

Here is the output from that command in the user email body:

Please find attached the query result for:  App: ABCDEF Config: GHIJK   
Counter Type: LMNOP <br> Thanks!

I have tried using
and /r/n without any luck. I also tried different combinations of adding quotes and /.

The code that doesn't give any desired output.

exec('echo "Please find attached the query result for:'<br>'  App: '.$varApp.' '<br>' Config: '.$varConfig.' <br> Counter Type: '.$varCtrType.' <br> Thanks!" | /bin/mail -s "Testing" -a '.$output[8].' '.$varEmail.'  2>&1', $output2 )

OR

exec('echo "Please find attached the query result for:/r/n  App: '.$varApp.' /r/n Config: '.$varConfig.' <br> Counter Type: '.$varCtrType.' <br> Thanks!" | /bin/mail -s "Testing" -a '.$output[8].' '.$varEmail.'  2>&1', $output2 );

I think I don't know how to add breaks/newline in middle of this echo statement. Any guidance here is deeply appreciated!

Thanks!

Answer 1

Use the printf command instead of echo, it processes escape sequences in the format string.

Also, the escape sequence for newline is , not /n. You don't need at all.

exec('printf "Please find attached the query result for:
  App: %s 
 Config: %s 
 Counter Type: %s 
 Thanks!" "' . $varApp . '" "' . $varConfig . '" "' . $varCtrType . '"| /bin/mail -s "Testing" -a '.$output[8].' '.$varEmail.'  2>&1', $output2 );