[TASK] Use modern string functions

CHANGELOG.md

@@ -24,6 +24,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 
 ### Changed
 
+- Use modern string functions (#1917)
 - Require Fluid >= 2.7.4 (#1906)
 - Require at least version 12.4.15 for TYPO3 12LTS (#1897)
 - Require TYPO3 >= 11.5.37 (#1889)

Classes/Mapper/AbstractDataMapper.php

@@ -868,7 +868,7 @@ private function saveOneToManyRelationRecords(AbstractModel $model): void
                 );
             }
 
-            if (\strncmp($foreignField, 'tx_', 3) === 0) {
+            if (str_starts_with($foreignField, 'tx_')) {
                 $foreignKey = \ucfirst((string)\preg_replace('/tx_[a-z]+_/', '', $foreignField));
             } else {
                 $foreignKey = \ucfirst($foreignField);

Classes/Templating/Template.php

@@ -101,7 +101,7 @@ private function extractSubparts(string $templateCode): void
         // If there are no HTML comments in  the template code, there cannot be
         // any subparts. So there's no need to use an expensive regular
         // expression to find any subparts in that case.
-        if (strpos($templateCode, '<!--') === false) {
+        if (!str_contains($templateCode, '<!--')) {
             return;
         }
 
@@ -140,7 +140,7 @@ private function findMarkers(): void
 
         foreach (\array_unique($matches[1]) as $markerName) {
             /** @var non-empty-string $markerName */
-            if (\strncmp($markerName, 'LABEL_', 6) === 0) {
+            if (str_starts_with($markerName, 'LABEL_')) {
                 $this->labelMarkerNames[] = \strtolower($markerName);
             }
         }

composer.json

@@ -29,6 +29,7 @@
 		"ext-zip": "*",
 		"doctrine/dbal": "^2.13.8 || ^3.9",
 		"psr/log": "^1.0 || ^2.0 || ^3.0",
+		"symfony/polyfill-php80": "^1.31.0",
 		"typo3/cms-core": "^11.5.37 || ^12.4.15",
 		"typo3/cms-extbase": "^11.5.37 || ^12.4.15",
 		"typo3/cms-fluid": "^11.5.37 || ^12.4.15",