What will be the output of the following PHP code ?< ?php$on_e = 1;$tw_o = 2;$thre_e = 3;$fou_r = 4;echo "$on_e / $tw_o + $thre_e / $fou_r" ;?>

To analyze the output of the provided PHP code, let's examine it step by step.

Code Breakdown

1. The variables are defined as follows:

   • $on_e = 1
   • $tw_o = 2
   • $thre_e = 3
   • $fou_r = 4

2. The echo statement attempts to print the expression:

   echo "$on_e / $tw_o + $thre_e / $fou_r";
   

String Interpolation

In PHP, when variables are placed within double quotes, they will be interpolated (i.e., replaced with their values). Thus, the echo statement modifies to:

echo "1 / 2 + 3 / 4";

Final Output

The final output is a string representation of the mathematical expression rather than the evaluated result of that expression. So, the output will be:

1 / 2 + 3 / 4

Summary

The PHP code outputs the string 1 / 2 + 3 / 4, and does not perform actual arithmetic calculations.

Final Answer

1 / 2 + 3 / 4