return match line number as the array key in result

src/Gemtext/Body.php

@@ -20,11 +20,11 @@ class Body
     {
         $matches = [];
 
-        foreach ($this->_lines as $line)
+        foreach ($this->_lines as $index => $line)
         {
             if (preg_match('/^#([^#]+)/', trim($line), $match))
             {
-                $matches[] = trim(
+                $matches[$index] = trim(
                     $match[1]
                 );
             }
@@ -37,11 +37,11 @@ class Body
     {
         $matches = [];
 
-        foreach ($this->_lines as $line)
+        foreach ($this->_lines as $index => $line)
         {
             if (preg_match('/^##([^#]+)/', trim($line), $match))
             {
-                $matches[] = trim(
+                $matches[$index] = trim(
                     $match[1]
                 );
             }
@@ -54,11 +54,11 @@ class Body
     {
         $matches = [];
 
-        foreach ($this->_lines as $line)
+        foreach ($this->_lines as $index => $line)
         {
             if (preg_match('/^###([^#]+)/', trim($line), $match))
             {
-                $matches[] = trim(
+                $matches[$index] = trim(
                     $match[1]
                 );
             }
@@ -71,11 +71,11 @@ class Body
     {
         $matches = [];
 
-        foreach ($this->_lines as $line)
+        foreach ($this->_lines as $index => $line)
         {
             if (preg_match('/^=>(.*)/', trim($line), $match))
             {
-                $matches[] = trim(
+                $matches[$index] = trim(
                     $match[1]
                 );
             }
@@ -88,11 +88,11 @@ class Body
     {
         $matches = [];
 
-        foreach ($this->_lines as $line)
+        foreach ($this->_lines as $index => $line)
         {
             if (preg_match('/' . $protocol . ':\/\/(.*)[\s\S\'"]*/', trim($line), $match))
             {
-                $matches[] =
+                $matches[$index] =
                 sprintf(
                     '%s://%s',
                     $protocol,