Opcode Descriptions and Examples
PHP Manual

MOD

PHP code

<?php
/*
 * Makes the value of "result" congruent to "value1" modulo "value2".
 * opcode number: 5
 */
echo 3;
?>

PHP opcodes

Function name: (null)

Compiled variables: none

line#op fetchextreturn operands
60 MOD   ~0 6,3
 1 ECHO     ~0
72 RETURN     1

Opcode Descriptions and Examples
PHP Manual