valid datetime

Author: Dogan Ucar

src/Util/DateTimeUtil.php

@@ -74,4 +74,16 @@ public static function timestampToGermanDateFormat(int $timestamp): string {
         $format = $dateTime->format(DateTimeUtil::GERMAN_DATE_TIME_FORMAT);
         return $format;
     }
+
+    /**
+     * Whether string is a valid date or not
+     *
+     * @param string $date
+     * @param string $format
+     * @return bool
+     */
+    public static function valid(string $date, string $format): bool {
+        return date($format, strtotime($date)) === $date;
+
+    }
 }

test/Util/DateTimeUtilTest.php

@@ -0,0 +1,18 @@
+<?php
+
+
+use doganoo\PHPUtil\Util\DateTimeUtil;
+use PHPUnit\Framework\TestCase;
+
+class DateTimeUtilTest extends TestCase {
+
+    public function testValid(){
+
+        $this->assertTrue(true === DateTimeUtil::valid("2019-01-01", "Y-m-d"));
+        $this->assertTrue(false === DateTimeUtil::valid("sfsfsdfs", "Y-m-d"));
+        $this->assertTrue(false === DateTimeUtil::valid("-1", "y-m-d"));
+        $this->assertTrue(false === DateTimeUtil::valid("2019-02-30", "Y-m-d"));
+        $this->assertTrue(true === DateTimeUtil::valid("01-02-2018", "d-m-Y"));
+    }
+
+}