Drop support for PHP < 7.3

Ref #119

.github/workflows/tests.yml

@@ -7,11 +7,11 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php: ['5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3']
+        php: ['7.3', '7.4', '8.0', '8.1', '8.2', '8.3']
     name: PHP ${{ matrix.php }}
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Install PHP
       uses: shivammathur/setup-php@v2
@@ -26,7 +26,7 @@ jobs:
 
     - name: Cache Composer packages
       id: composer-cache
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: vendor
         key: ${{ matrix.php }}-composer

composer.json

@@ -6,7 +6,7 @@
     "homepage": "https://github.com/rlanvin/php-rrule",
     "license": "MIT",
     "require": {
-        "php": ">=5.6.0"
+        "php": ">=7.3"
     },
     "suggest": {
         "ext-intl": "Intl extension is needed for humanReadable()"
@@ -22,7 +22,7 @@
         }
     },
     "require-dev": {
-        "phpunit/phpunit": "^5.7|^6.5|^8.0",
+        "phpunit/phpunit": "^8.0",
         "phpmd/phpmd" : "@stable"
     }
 }

phpunit.xml.dist

@@ -8,7 +8,6 @@
          convertWarningsToExceptions="true"
          processIsolation="false"
          stopOnFailure="false"
-         syntaxCheck="false"
          bootstrap="./tests/bootstrap.php"
         >
     <testsuites>

tests/RRuleTest.php

@@ -2257,7 +2257,7 @@ public function testQuirkyRfcStringsParser($str,$occurrences)
 		$rule = @ new RRule($str);
 
 		if ($occurrences) {
-			$this->assertEquals($occurrences, $rule->getOccurrences(), '', 1);
+			$this->assertEquals($occurrences, $rule->getOccurrences());
 		}
 	}
 
@@ -2803,10 +2803,10 @@ public function testGetRule()
 			'DTSTART' => '2016-01-01'
 		);
 		$rrule = new RRule($array);
-		$this->assertInternalType('array', $rrule->getRule());
+		$this->assertIsArray($rrule->getRule());
 		$rule = $rrule->getRule();
 		$this->assertEquals('YEARLY', $rule['FREQ']);
-		$this->assertInternalType('string', $rule['DTSTART']);
+		$this->assertIsString($rule['DTSTART']);
 
 		$rrule = new RRule("DTSTART;TZID=America/New_York:19970901T090000\nRRULE:FREQ=HOURLY;UNTIL=19971224T000000Z;WKST=SU;BYDAY=MO,WE,FR;BYMONTH=1;BYHOUR=1");
 		$rule = $rrule->getRule();

tests/RSetTest.php

@@ -591,13 +591,13 @@ public function testGetter()
 			'DTSTART' => date_create('1997-09-02 09:00')
 		));
 
-		$this->assertInternalType('array', $rset->getRRules());
+		$this->assertIsArray($rset->getRRules());
 		$this->assertCount(2, $rset->getRRules());
-		$this->assertInternalType('array', $rset->getExRules());
+		$this->assertIsArray($rset->getExRules());
 		$this->assertCount(1, $rset->getExRules());
-		$this->assertInternalType('array', $rset->getDates());
+		$this->assertIsArray($rset->getDates());
 		$this->assertCount(3, $rset->getDates());
-		$this->assertInternalType('array', $rset->getExDates());
+		$this->assertIsArray($rset->getExDates());
 		$this->assertCount(0, $rset->getExDates());
 	}