implement findBetween method to StringHelper

Author: salehhashemi1992

framework/helpers/BaseStringHelper.php

@@ -527,4 +527,32 @@ public static function mask($string, $start, $length, $mask = '*') {
 
         return $masked;
     }
+
+    /**
+     * Returns the portion of the string that lies between the first occurrence of the start string
+     * and the last occurrence of the end string after that.
+     *
+     * @param string $string The input string.
+     * @param string $start The string marking the start of the portion to extract.
+     * @param string $end The string marking the end of the portion to extract.
+     * @return string The portion of the string between the first occurrence of start and the last occurrence of end.
+     */
+    public static function findBetween($string, $start, $end)
+    {
+        $startPos = mb_strpos($string, $start);
+
+        if ($startPos === false) {
+            return '';
+        }
+
+        // Cut the string from the start position
+        $subString = mb_substr($string, $startPos + mb_strlen($start));
+        $endPos = mb_strrpos($subString, $end);
+
+        if ($endPos === false) {
+            return '';
+        }
+
+        return mb_substr($subString, 0, $endPos);
+    }
 }

tests/framework/helpers/StringHelperTest.php

@@ -506,4 +506,30 @@ public function testMask()
         $this->assertSame('em**[email protected]', StringHelper::mask('[email protected]', 2, 2));
         $this->assertSame('******email.com', StringHelper::mask('[email protected]', 0, 6));
     }
+
+    /**
+     * @param string $string
+     * @param string $start
+     * @param string $end
+     * @param string $expectedResult
+     * @dataProvider dataProviderFindBetween
+     */
+    public function testFindBetween($string, $start, $end, $expectedResult)
+    {
+        $this->assertSame($expectedResult, StringHelper::findBetween($string, $start, $end));
+    }
+
+    public function dataProviderFindBetween()
+    {
+        return [
+            ['hello world hello', 'hello ', ' world', ''],  // end before start
+            ['This is a sample string', 'is ', ' string', 'is a sample'],  // normal case
+            ['startendstart', 'start', 'end', ''],  // end before start
+            ['startmiddleend', 'start', 'end', 'middle'],  // normal case
+            ['startend', 'start', 'end', ''],  // end immediately follows start
+            ['multiple start start end end', 'start ', ' end', 'start end'],  // multiple starts and ends
+            ['', 'start', 'end', ''],  // empty string
+            ['no delimiters here', 'start', 'end', ''],  // no start and end
+        ];
+    }
 }