fix: store some testing examples

Author: xepozz

playground/test.compile.php

@@ -0,0 +1,5 @@
+<?php
+
+var_dump(
+    opcache_compile_file(__DIR__ . '/test.php')
+);

playground/test.php

@@ -0,0 +1,11 @@
+<?php
+$show_value = 123;
+echo 'sing_quote' . $show_value;
+function test()
+{
+    return DateTimeImmutable::createFromFormat('123');
+}
+
+throw E;
+echo "double_quote{$show_value}";
+

playground/tokens_object.php

@@ -0,0 +1,15 @@
+<?php
+
+echo json_encode(
+    array_map(
+        function (PhpToken $token) {
+            return [
+                'line' => $token->line,
+                'pos' => $token->pos,
+                'name' => $token->getTokenName(),
+                'value' => $token->text,
+            ];
+        },
+        \PhpToken::tokenize(file_get_contents($argv[1])),
+    )
+);

playground/tokens_scalar.php

@@ -0,0 +1,16 @@
+<?php
+
+echo json_encode(
+    array_map(
+        function ($token) {
+            return [
+                'line' => $isArray = is_array($token) ? $token[2] : null,
+                'name' => $isArray ? token_name($token[0]) : null,
+                'value' => $isArray ? $token[1] : $token,
+            ];
+        },
+        token_get_all(
+            file_get_contents($argv[1])
+        ),
+    )
+);