diff --git a/examples/topics/async/bootstrap.php b/examples/topics/async/bootstrap.php
index 661a0b122..e9d5bab7a 100644
--- a/examples/topics/async/bootstrap.php
+++ b/examples/topics/async/bootstrap.php
@@ -1,5 +1,11 @@
 <?php declare(strict_types=1);
 
+if ('' !== \Phar::running(false)) {
+    print 'This example cannot be run in PHAR, please use CLI approach.';
+
+    exit(1);
+}
+
 require __DIR__ . '/../../bootstrap.php';
 
 const __FLOW_AUTOLOAD__ =  __DIR__ . '/../vendor/autoload.php';
diff --git a/examples/topics/db/db_clean.php b/examples/topics/db/db_clean.php
index 41e92dc73..67cffd158 100755
--- a/examples/topics/db/db_clean.php
+++ b/examples/topics/db/db_clean.php
@@ -1,6 +1,12 @@
 #!/usr/bin/env php
 <?php
 
+if ('' !== \Phar::running(false)) {
+    print 'This example cannot be run in PHAR, please use CLI approach.';
+
+    exit(1);
+}
+
 use Doctrine\DBAL\DriverManager;
 use Doctrine\DBAL\Schema\Column;
 use Doctrine\DBAL\Schema\Table;
diff --git a/examples/topics/db/db_source.php b/examples/topics/db/db_source.php
index 99ec5ca2a..8dbf97a79 100644
--- a/examples/topics/db/db_source.php
+++ b/examples/topics/db/db_source.php
@@ -1,6 +1,12 @@
 #!/usr/bin/env php
 <?php
 
+if ('' !== \Phar::running(false)) {
+    print 'This example cannot be run in PHAR, please use CLI approach.';
+
+    exit(1);
+}
+
 use function Flow\ETL\DSL\ref;
 use Doctrine\DBAL\DriverManager;
 use Doctrine\DBAL\Schema\Column;
diff --git a/examples/topics/db/db_to_db_sync.php b/examples/topics/db/db_to_db_sync.php
index 624113836..df437ed79 100644
--- a/examples/topics/db/db_to_db_sync.php
+++ b/examples/topics/db/db_to_db_sync.php
@@ -1,5 +1,11 @@
 <?php declare(strict_types=1);
 
+if ('' !== \Phar::running(false)) {
+    print 'This example cannot be run in PHAR, please use CLI approach.';
+
+    exit(1);
+}
+
 use function Flow\ETL\DSL\concat;
 use function Flow\ETL\DSL\lit;
 use function Flow\ETL\DSL\ref;
diff --git a/examples/topics/fs/remote/json_remote_stream.php b/examples/topics/fs/remote/json_remote_stream.php
index 98f8aa69b..47054f38a 100644
--- a/examples/topics/fs/remote/json_remote_stream.php
+++ b/examples/topics/fs/remote/json_remote_stream.php
@@ -1,5 +1,11 @@
 <?php declare(strict_types=1);
 
+if ('' !== \Phar::running(false)) {
+    print 'This example cannot be run in PHAR, please use CLI approach.';
+
+    exit(1);
+}
+
 use function Flow\ETL\DSL\concat;
 use function Flow\ETL\DSL\lit;
 use function Flow\ETL\DSL\ref;
diff --git a/examples/topics/fs/remote/json_remote_stream_glob.php b/examples/topics/fs/remote/json_remote_stream_glob.php
index cb808ecb3..ca7da3e38 100644
--- a/examples/topics/fs/remote/json_remote_stream_glob.php
+++ b/examples/topics/fs/remote/json_remote_stream_glob.php
@@ -1,5 +1,11 @@
 <?php declare(strict_types=1);
 
+if ('' !== \Phar::running(false)) {
+    print 'This example cannot be run in PHAR, please use CLI approach.';
+
+    exit(1);
+}
+
 use function Flow\ETL\DSL\concat;
 use function Flow\ETL\DSL\lit;
 use function Flow\ETL\DSL\ref;