Successor to PR #3523. There are 494 single-line changes (`public function provider` to `public static function provider`) in this PR. None of these were made manually; they were all created with the following script (adapted from
https://stackoverflow.com/questions/25909820/how-to-recursively-iterate-through-files-in-php):
```php
$dir = 'C:/git/unit10prep2/tests/PhpSpreadsheetTests';
$it = new RecursiveDirectoryIterator($dir);
// Loop through files
foreach(new RecursiveIteratorIterator($it) as $file) {
if ($file->getExtension() === 'php') {
$contents = file_get_contents($file);
$new = preg_replace('/public function (\\w*)([Pp])rovider/', 'public static function $1$2rovider', $contents);
if ($new !== $contents) {
echo "changing $file\n";
file_put_contents($file, $new);
}
}
}
```
After this PR, there will be one more, with a small number of test changes, and enabling PhpUnit 10 for Php 8.1+.
* Eliminate Most Scrutinizer Problems in Test Suite
Mostly minor code changes, with some annotations.
* Missed 2 php-cs-fixer Problems
They should be fixed now.
* Continue MathTrig Breakup - Penultimate?
Continuing the process of breaking MathTrip.php up into smaller classes. This round takes care of about half of what is left, so perhaps one round after this one will finish the job:
- ARABIC
- COMBIN; also implemented COMBINA
- FACTDOUBLE
- GCD (which accepts and ignores empty cells as arguments, but returns VALUE if all the arguments are that way; LCM does the same)
- LOG_BASE, LOG10, LN
- implemented MUNIT
- MOD
- POWER
- RAND, RANDBETWEEN (RANDARRAY is too complicated to implement with this ticket)
As you can see from the description, there are some functions which were combined in a single class. When not combined, I adopted PowerKiki's suggestion of using "execute" as the function name.
Co-authored-by: Mark Baker <mark@lange.demon.co.uk>