This rule is deprecated, and will eventually be removed.

## Why is this an issue?

There are valid cases for passing a variable multiple times into the same method call, but usually doing so is a mistake, and something else was intended for one of the arguments.

### Noncompliant code example

    if (compare($a+$x, $a+$x) != 0) { // Noncompliant
      //...
    }

    if (compare(getValue($a), getValue($a)) != 0) { // Noncompliant
      // ...
    }

### Compliant solution

    if (compare($a+$y, $a+$x) != 0) {
      //...
    }

    $v1 = getValue($a);
    $v2 = getValue($a);
    if (compare($v1, $v2) != 0) {
      // ...
    }