# How to Convert Positive Numbers to Negative in PHP?

In PHP, you can convert a positive number to negative in the following ways:

If you wish to always return a negative number (i.e. retain the sign of a negative number whilst ensuring that any positive number is converted to negative), then you can first convert the number to its absolute form, and then negate it.

## Using Negation Operator

You can convert a positive number to negative by using the negation operator (`-`) like so:

```-n
```

For example, you can use this in the following way:

```\$num = 1234;
\$negated = -\$num;

var_dump(\$negated); // -1234
```

## Using Arithmetic Operators

You can convert a positive number to negative by simply multiplying or dividing it by `-1`:

```n * -1
```
```n / -1
```

Alternatively, you may subtract the number from `0`:

```0 - n
```

You can use any of these to convert a positive number to a negative number, for example, like so:

```\$num = 1234;
\$negated = \$num * -1;

var_dump(\$negated); // -1234
```
```\$num = 1234;
\$negated = \$num / -1;

var_dump(\$negated); // -1234
```
```\$num = 1234;
\$negated = 0 - \$num;

var_dump(\$negated); // -1234
```

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