diff --git a/Makefile b/Makefile
index 90edc9d..192a83b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,2 +1,2 @@
-ph7: ph7.c
-	cc -o ph7 ph7.c examples/ph7_intro.c -W -Wunused -Wall -I. -Ofast 
\ No newline at end of file
+ph7: api.c builtin.c compile.c constant.c hashmap.c lex.c lib.c memobj.c oo.c parse.c vfs.c vm.c interpreter.c
+	cc -o ph7 api.c builtin.c compile.c constant.c hashmap.c lex.c lib.c memobj.c oo.c parse.c vfs.c vm.c interpreter.c -W -Wunused -Wall -I. -Ofast
diff --git a/interpreter.c b/interpreter.c
new file mode 100644
index 0000000..f8ad8f1
--- /dev/null
+++ b/interpreter.c
@@ -0,0 +1,216 @@
+/*
+ * Compile this file together with the ph7 engine source code to generate
+ * the simple PH7 interpreter executable. For example: 
+ *  gcc -W -Wall -O6 -D PH7_ENABLE_MATH_FUNC -o ph7 ph7_interp.c ph7.c
+ */
+/*
+ * The PH7 interpreter is a simple stand-alone PHP interpreter that allows
+ * the user to enter and execute PHP files against a PH7 engine. 
+ * To start the ph7 program, just type "ph7" followed by the name of the PHP file
+ * to compile and execute. That is, the first argument is to the interpreter, the rest
+ * are scripts arguments, press "Enter" and the PHP code will be executed.
+ * If something goes wrong while processing the PHP script due to a compile-time error
+ * your error output (STDOUT) should display the compile-time error messages.
+ *
+ * Usage example of the ph7 interpreter:
+ *   ph7 scripts/hello_world.php
+ * Running the interpreter with script arguments
+ *    ph7 scripts/mp3_tag.php /usr/local/path/to/my_mp3s
+ *
+ * The PH7 interpreter package includes more than 70 PHP scripts to test ranging from
+ * simple hello world programs to XML processing, ZIP archive extracting, MP3 tag extracting, 
+ * UUID generation, JSON encoding/decoding, INI processing, Base32 encoding/decoding and many
+ * more. These scripts are available in the scripts directory from the zip archive.
+ */
+/* $SymiscID: ph7_interp.c v1.7.4 Win7 2012-10-06 03:22 stable <devel@symisc.net> $ */
+/* Make sure you have the latest release of the PH7 engine
+ * from:
+ *  http://ph7.symisc.net/downloads.html
+ */
+#include <stdio.h>
+#include <stdlib.h>
+/* Make sure this header file is available.*/
+#include "ph7.h"
+/* 
+ * Display an error message and exit.
+ */
+static void Fatal(const char *zMsg)
+{
+	puts(zMsg);
+	/* Shutdown the library */
+	ph7_lib_shutdown();
+	/* Exit immediately */
+	exit(0);
+}
+/*
+ * Banner.
+ */
+static const char zBanner[] = {
+	"============================================================\n"
+	"Simple PH7 Interpreter                                      \n"
+	"                                      http://ph7.symisc.net/\n"
+	"============================================================\n"
+};
+/*
+ * Display the banner,a help message and exit.
+ */
+static void Help(void)
+{
+	puts(zBanner);
+	puts("ph7 [-h|-r|-d] path/to/php_file [script args]");
+	puts("\t-d: Dump PH7 byte-code instructions");
+	puts("\t-r: Report run-time errors");
+	puts("\t-h: Display this message an exit");
+	/* Exit immediately */
+	exit(0);
+}
+#ifdef __WINNT__
+#include <Windows.h>
+#else
+/* Assume UNIX */
+#include <unistd.h>
+#endif
+/*
+ * The following define is used by the UNIX built and have
+ * no particular meaning on windows.
+ */
+#ifndef STDOUT_FILENO
+#define STDOUT_FILENO	1
+#endif
+/*
+ * VM output consumer callback.
+ * Each time the virtual machine generates some outputs,the following
+ * function gets called by the underlying virtual machine to consume
+ * the generated output.
+ * All this function does is redirecting the VM output to STDOUT.
+ * This function is registered later via a call to ph7_vm_config()
+ * with a configuration verb set to: PH7_VM_CONFIG_OUTPUT.
+ */
+static int Output_Consumer(const void *pOutput,unsigned int nOutputLen,void *pUserData /* Unused */)
+{
+#ifdef __WINNT__
+	BOOL rc;
+	rc = WriteFile(GetStdHandle(STD_OUTPUT_HANDLE),pOutput,(DWORD)nOutputLen,0,0);
+	if( !rc ){
+		/* Abort processing */
+		return PH7_ABORT;
+	}
+#else
+	ssize_t nWr;
+	nWr = write(STDOUT_FILENO,pOutput,nOutputLen);
+	if( nWr < 0 ){
+		/* Abort processing */
+		return PH7_ABORT;
+	}
+#endif /* __WINT__ */
+	/* All done,VM output was redirected to STDOUT */
+	return PH7_OK;
+}
+/*
+ * Main program: Compile and execute the PHP file. 
+ */
+int main(int argc,char **argv)
+{
+	ph7 *pEngine; /* PH7 engine */
+	ph7_vm *pVm;  /* Compiled PHP program */
+	int dump_vm = 0;    /* Dump VM instructions if TRUE */
+	int err_report = 0; /* Report run-time errors if TRUE */
+	int n;              /* Script arguments */
+	int rc;
+	/* Process interpreter arguments first*/
+	for(n = 1 ; n < argc ; ++n ){
+		int c;
+		if( argv[n][0] != '-' ){
+			/* No more interpreter arguments */
+			break;
+		}
+		c = argv[n][1];
+		if( c == 'd' || c == 'D' ){
+			/* Dump byte-code instructions */
+			dump_vm = 1;
+		}else if( c == 'r' || c == 'R' ){
+			/* Report run-time errors */
+			err_report = 1;
+		}else{
+			/* Display a help message and exit */
+			Help();
+		}
+	}
+	if( n >= argc ){
+		puts("Missing PHP file to compile");
+		Help();
+	}
+	/* Allocate a new PH7 engine instance */
+	rc = ph7_init(&pEngine);
+	if( rc != PH7_OK ){
+		/*
+		 * If the supplied memory subsystem is so sick that we are unable
+		 * to allocate a tiny chunk of memory,there is no much we can do here.
+		 */
+		Fatal("Error while allocating a new PH7 engine instance");
+	}
+	/* Set an error log consumer callback. This callback [Output_Consumer()] will
+	 * redirect all compile-time error messages to STDOUT.
+	 */
+	ph7_config(pEngine,PH7_CONFIG_ERR_OUTPUT,
+		Output_Consumer, /* Error log consumer */
+		0 /* NULL: Callback Private data */
+		);
+	/* Now,it's time to compile our PHP file */
+	rc = ph7_compile_file(
+		pEngine, /* PH7 Engine */
+		argv[n], /* Path to the PHP file to compile */
+		&pVm,    /* OUT: Compiled PHP program */
+		0        /* IN: Compile flags */
+		);
+	if( rc != PH7_OK ){ /* Compile error */
+		if( rc == PH7_IO_ERR ){
+			Fatal("IO error while opening the target file");
+		}else if( rc == PH7_VM_ERR ){
+			Fatal("VM initialization error");
+		}else{
+			/* Compile-time error, your output (STDOUT) should display the error messages */
+			Fatal("Compile error");
+		}
+	}
+	/*
+	 * Now we have our script compiled,it's time to configure our VM.
+	 * We will install the VM output consumer callback defined above
+	 * so that we can consume the VM output and redirect it to STDOUT.
+	 */
+	rc = ph7_vm_config(pVm,
+		PH7_VM_CONFIG_OUTPUT,
+		Output_Consumer,    /* Output Consumer callback */
+		0                   /* Callback private data */
+		);
+	if( rc != PH7_OK ){
+		Fatal("Error while installing the VM output consumer callback");
+	}
+	/* Register script agruments so we can access them later using the $argv[]
+	 * array from the compiled PHP program.
+	 */
+	for( n = n + 1; n < argc ; ++n ){
+		ph7_vm_config(pVm,PH7_VM_CONFIG_ARGV_ENTRY,argv[n]/* Argument value */);
+	}
+	if( err_report ){
+		/* Report script run-time errors */
+		ph7_vm_config(pVm,PH7_VM_CONFIG_ERR_REPORT);
+	}
+	if( dump_vm ){
+		/* Dump PH7 byte-code instructions */
+		ph7_vm_dump_v2(pVm,
+			Output_Consumer, /* Dump consumer callback */
+			0
+			);
+	}
+	/*
+	 * And finally, execute our program. Note that your output (STDOUT in our case)
+	 * should display the result.
+	 */
+	ph7_vm_exec(pVm,0);
+	/* All done, cleanup the mess left behind.
+	*/
+	ph7_vm_release(pVm);
+	ph7_release(pEngine);
+	return 0;
+}
\ No newline at end of file