- print_r: documentation ( source)
- log: documentation ( source)
- range: documentation ( source)
<?php
$max_parcelas = 10;
$arr = [];
$range = range(1,$max_parcelas);
$inicial = 2000;
$cheio = 2900;
$dif = $inicial - $cheio;
foreach($range as $x) {
$log = log($x, $max_parcelas);
$val = $log * $dif;
$arr[$x] = ['log' => $log, 'valor' => $val];
}
print_r($arr);