Double call to mb_string

[dktcoding]

Hi there!

There's an issue in DiffToolkit where it's calling mb_strlen(mb_strlen($longtext)) this produces an error on newer php versions (using declare(strict_types=1)) because mb_strlen must receive a string as an argument.

After changing it all tests keep passing

https://github.com/yetanotherape/diff-match-patch/blob/463b635e734775ff5e38c2e2edc4f676ea1c3da2/src/DiffToolkit.php#L175

Here's the previous phpunit log

PhpUnit Log

 fede@desktop ~/Codes/diff-match-patch ~ $ vendor/phpunit/phpunit/phpunit
//PHPUnit 9.1.3 by Sebastian Bergmann and contributors.

Runtime:       PHP 7.4.5
Configuration: /home/fede/Codes/diff-match-patch/phpunit.xml.dist

.E.......EEE..........E.............EEEE.Elapsed time: 0.008
Memory usage: 0.144
.Elapsed time: 0.158
Memory usage: 0
..                      44 / 44 (100%)

Time: 00:00.315, Memory: 8.00 MB

There were 9 errors:

1) DiffMatchPatch\DiffMatchPatchTest::testDiffMain
TypeError: Argument 4 passed to DiffMatchPatch\Diff::compute() must be of the type int, float given, called in /home/fede/Codes/diff-match-patch/src/Diff.php on line 991

/home/fede/Codes/diff-match-patch/src/Diff.php:1029
/home/fede/Codes/diff-match-patch/src/Diff.php:991
/home/fede/Codes/diff-match-patch/src/DiffMatchPatch.php:174
/home/fede/Codes/diff-match-patch/tests/DiffMatchPatchTest.php:79

2) DiffMatchPatch\DiffMatchPatchTest::testPatchMake
TypeError: Argument 4 passed to DiffMatchPatch\Diff::compute() must be of the type int, float given, called in /home/fede/Codes/diff-match-patch/src/Diff.php on line 991

/home/fede/Codes/diff-match-patch/src/Diff.php:1029
/home/fede/Codes/diff-match-patch/src/Diff.php:991
/home/fede/Codes/diff-match-patch/src/Patch.php:293
/home/fede/Codes/diff-match-patch/src/DiffMatchPatch.php:262
/home/fede/Codes/diff-match-patch/tests/DiffMatchPatchTest.php:164

3) DiffMatchPatch\DiffMatchPatchTest::testPatchApply
TypeError: Argument 4 passed to DiffMatchPatch\Diff::compute() must be of the type int, float given, called in /home/fede/Codes/diff-match-patch/src/Diff.php on line 991

/home/fede/Codes/diff-match-patch/src/Diff.php:1029
/home/fede/Codes/diff-match-patch/src/Diff.php:991
/home/fede/Codes/diff-match-patch/src/Patch.php:293
/home/fede/Codes/diff-match-patch/src/DiffMatchPatch.php:262
/home/fede/Codes/diff-match-patch/tests/DiffMatchPatchTest.php:176
/home/fede/Codes/diff-match-patch/tests/DiffMatchPatchTest.php:188

4) DiffMatchPatch\DiffMatchPatchTest::testPatchApply_2
TypeError: Argument 4 passed to DiffMatchPatch\Diff::compute() must be of the type int, float given, called in /home/fede/Codes/diff-match-patch/src/Diff.php on line 991

/home/fede/Codes/diff-match-patch/src/Diff.php:1029
/home/fede/Codes/diff-match-patch/src/Diff.php:991
/home/fede/Codes/diff-match-patch/src/Patch.php:293
/home/fede/Codes/diff-match-patch/src/DiffMatchPatch.php:262
/home/fede/Codes/diff-match-patch/tests/DiffMatchPatchTest.php:176
/home/fede/Codes/diff-match-patch/tests/DiffMatchPatchTest.php:196

5) DiffMatchPatch\DiffTest::testMain
TypeError: Argument 4 passed to DiffMatchPatch\Diff::compute() must be of the type int, float given, called in /home/fede/Codes/diff-match-patch/src/Diff.php on line 991

/home/fede/Codes/diff-match-patch/src/Diff.php:1029
/home/fede/Codes/diff-match-patch/src/Diff.php:991
/home/fede/Codes/diff-match-patch/tests/DiffTest.php:729

6) DiffMatchPatch\PatchTest::testMake
TypeError: Argument 4 passed to DiffMatchPatch\Diff::compute() must be of the type int, float given, called in /home/fede/Codes/diff-match-patch/src/Diff.php on line 991

/home/fede/Codes/diff-match-patch/src/Diff.php:1029
/home/fede/Codes/diff-match-patch/src/Diff.php:991
/home/fede/Codes/diff-match-patch/src/Patch.php:293
/home/fede/Codes/diff-match-patch/tests/PatchTest.php:157

7) DiffMatchPatch\PatchTest::testSplitMax
TypeError: Argument 4 passed to DiffMatchPatch\Diff::compute() must be of the type int, float given, called in /home/fede/Codes/diff-match-patch/src/Diff.php on line 991

/home/fede/Codes/diff-match-patch/src/Diff.php:1029
/home/fede/Codes/diff-match-patch/src/Diff.php:991
/home/fede/Codes/diff-match-patch/src/Patch.php:293
/home/fede/Codes/diff-match-patch/tests/PatchTest.php:214

8) DiffMatchPatch\PatchTest::testAddPadding
TypeError: Argument 4 passed to DiffMatchPatch\Diff::compute() must be of the type int, float given, called in /home/fede/Codes/diff-match-patch/src/Diff.php on line 991

/home/fede/Codes/diff-match-patch/src/Diff.php:1029
/home/fede/Codes/diff-match-patch/src/Diff.php:991
/home/fede/Codes/diff-match-patch/src/Patch.php:293
/home/fede/Codes/diff-match-patch/tests/PatchTest.php:247

9) DiffMatchPatch\PatchTest::testApply
TypeError: Argument 4 passed to DiffMatchPatch\Diff::compute() must be of the type int, float given, called in /home/fede/Codes/diff-match-patch/src/Diff.php on line 991

/home/fede/Codes/diff-match-patch/src/Diff.php:1029
/home/fede/Codes/diff-match-patch/src/Diff.php:991
/home/fede/Codes/diff-match-patch/src/Patch.php:293
/home/fede/Codes/diff-match-patch/tests/PatchTest.php:288

Regards!