# How to factorize a number into PHP – Easy Way

In number theory, integer factorization is the breaking down of a composite number into smaller divisors, which when multiplied together equal the original number. By the fundamental theorem of arithmetic, every positive integer number, greater than one has a unique prime factorization.

Here’s how to factorize a number into php (two number integer factorization) :

```<?php

function factor_number(\$number) {
\$s = array(); \$f = array();
\$n2 = \$number/2;
for (\$i=1; \$i<=\$n2; \$i++) {
if (\$number % \$i == 0) {
\$k = \$number / \$i;
\$sum = \$i + \$k;
if (!in_array(\$sum, \$s)) {
\$f[] = \$i." * ".\$k;
\$s[] = \$sum;
}
}
}
return \$f;
}

echo '<pre>';
print_r(factor_number(6552));
echo '</pre>';```

And the result of the script is as follows:

```Array
(
[0] => 1 * 6552
[1] => 2 * 3276
[2] => 3 * 2184
[3] => 4 * 1638
[4] => 6 * 1092
[5] => 7 * 936
[6] => 8 * 819
[7] => 9 * 728
[8] => 12 * 546
[9] => 13 * 504
[10] => 14 * 468
[11] => 18 * 364
[12] => 21 * 312
[13] => 24 * 273
[14] => 26 * 252
[15] => 28 * 234
[16] => 36 * 182
[17] => 39 * 168
[18] => 42 * 156
[19] => 52 * 126
[20] => 56 * 117
[21] => 63 * 104
[22] => 72 * 91
[23] => 78 * 84
)```