# How to Get the Length of an Integer in PHP?

In PHP, you can get the length of an integer in the following ways:

## Converting to String and Calling `strlen()`

You can simply convert the integer to a string and call the `strlen()` function on it to find the total number of digits in the integer:

```function intLen(int \$num) {
return strlen((string) abs(\$num));
}

echo intLen(0); // 1
echo intLen(-0); // 1
echo intLen(-12345); // 5
echo intLen(12345); // 5
```

Calling `abs()` on the integer is needed so that the minus symbol is removed from a negative integer prior to converting the integer to a string. Otherwise, the minus symbol (`-`) will be converted to string as is and will be counted in the string length.

## Looping and Removing Digits Off the End

You can simply create a loop, and remove the last digit from the integer in each iteration till there are no digits left. In each iteration you can increment a counter, which would give you the total number of digits in the integer:

```function intLen(int \$num) {
\$len = 0;

do {
// take last digit off `\$num`
\$num = (int) (\$num / 10);
// increment counter
\$len++;
} while (\$num !== 0);

return \$len;
}

echo intLen(0); // 1
echo intLen(-0); // 1
echo intLen(-12345); // 5
echo intLen(12345); // 5
```

## Calculating the Length Mathematically

You can calculate the number of digits in an integer in the following way:

```function intLen(int \$num) {
return (\$num === 0)
? 1
: ceil(log10(abs(\$num) + 1))
;
}

echo intLen(0); // 1
echo intLen(-0); // 1
echo intLen(-12345); // 5
echo intLen(12345); // 5
```

The check for `0` is necessary as `log10(0)` is equal to `-INF`.

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