Integrate README.EXT_SKEL to help option

- Sync help output using heredoc
- Add extension building instructions
- Building with phpize is preferred option. Mention also tests
- Refactor print_success()

README.SELF-CONTAINED-EXTENSIONS

@@ -104,8 +104,8 @@ CREATING SOURCE FILES
 
   ext_skel can be of great help when creating the common code for all modules
   in PHP for you and also writing basic function definitions and C code for
-  handling arguments passed to your functions. See README.EXT_SKEL for further
-  information.
+  handling arguments passed to your functions. See `./ext/ext_skel.php --help`
+  for further information.
 
   As for the rest, you are currently alone here. There are a lot of existing
   modules, use a simple module as a starting point and add your own code.

ext/ext_skel.php

@@ -31,23 +31,91 @@ function error($message) {
 /* {{{ print_help
  */
 function print_help() {
-	printf('php ext_skel.php --ext <name> [--experimental] [--author <name>]%s', PHP_EOL);
-	printf('                 [--dir <path>] [--std] [--onlyunix]%s', PHP_EOL);
-	printf('                 [--onlywindows] [--help]%1$s%1$s', PHP_EOL);
-	printf('  --ext <name>		The name of the extension defined as <name>%s', PHP_EOL);
-	printf('  --experimental	Passed if this extension is experimental, this creates%s', PHP_EOL);
-	printf('                        the EXPERIMENTAL file in the root of the extension%s', PHP_EOL);
-	printf('  --author <name>       Your name, this is used if --std is passed and%s', PHP_EOL);
-	printf('                        for the CREDITS file%s', PHP_EOL);
-	printf('  --dir <path>		Path to the directory for where extension should be%s', PHP_EOL);
-	printf('                        created. Defaults to the directory of where this script%s', PHP_EOL);
-	printf(' 			lives%s', PHP_EOL);
-	printf('  --std			If passed, the standard header used%s', PHP_EOL);
-	printf(' 			in extensions that is included in the core, will be used%s', PHP_EOL);
-	printf('  --onlyunix		Only generate configure scripts for Unix%s', PHP_EOL);
-	printf('  --onlywindows		Only generate configure scripts for Windows%s', PHP_EOL);
-	printf('  --help                This help%s', PHP_EOL);
+    if (PHP_OS_FAMILY != 'Windows') {
+        $file_prefix = './';
+        $make_prefix = '';
+    } else {
+        $file_prefix = '';
+        $make_prefix = 'n';
+    }
 
+    echo <<<HELP
+WHAT IT IS
+
+  It's a tool for automatically creating the basic framework for a PHP extension.
+
+HOW TO USE IT
+
+  Very simple. First, change to the ext/ directory of the PHP sources. Then run
+  the following
+
+    php ext_skel.php --ext extension_name
+
+  and everything you need will be placed in directory ext/extension_name.
+
+  If you don't need to test the existence of any external header files,
+  libraries or functions in them, the extension is ready to be compiled in PHP.
+  To compile the extension run the following:
+
+    cd extension_name
+    phpize
+    {$file_prefix}configure
+    {$make_prefix}make
+
+  Don't forget to run tests once the compilation is done:
+
+    {$make_prefix}make test
+
+  Alternatively, to compile extension in the PHP:
+
+    cd /path/to/php-src
+    {$file_prefix}buildconf
+    {$file_prefix}configure --enable-extension_name
+    {$make_prefix}make
+    {$make_prefix}make test TESTS=ext/extension_name/tests
+
+  The definition of PHP_extension_NAME_VERSION will be present in the
+  php_extension_name.h and injected into the zend_extension_entry definition.
+  This is required by the PECL website for the version string conformity checks
+  against package.xml
+
+SOURCE AND HEADER FILE NAME
+
+  The ext_skel.php script generates 'extension_name.c' and 'php_extension_name.h'
+  as the main source and header files. Keep these names.
+
+  extension functions (User functions) must be named
+
+  extension_name_function()
+
+  When you need to expose extension functions to other extensions, expose
+  functions strictly needed by others. Exposed internal function must be named
+
+  php_extension_name_function()
+
+  See also CODING_STANDARDS.
+
+OPTIONS
+
+  php ext_skel.php --ext <name> [--experimental] [--author <name>]
+                   [--dir <path>] [--std] [--onlyunix]
+                   [--onlywindows] [--help]
+
+  --ext <name>          The name of the extension defined as <name>
+  --experimental        Passed if this extension is experimental, this creates
+                        the EXPERIMENTAL file in the root of the extension
+  --author <name>       Your name, this is used if --std is passed and for the
+                        CREDITS file
+  --dir <path>          Path to the directory for where extension should be
+                        created. Defaults to the directory of where this script
+                        lives
+  --std                 If passed, the standard header used in extensions that
+                        is included in the core, will be used
+  --onlyunix            Only generate configure scripts for Unix
+  --onlywindows         Only generate configure scripts for Windows
+  --help                This help
+
+HELP;
 	exit;
 }
 /* }}} */
@@ -76,14 +144,14 @@ function print_success() {
 		$make_prefix = 'n';
 	}
 
-	printf('%1$sSuccess. The extension is now ready to be compiled into PHP. To do so, use the%s', PHP_EOL);
+	printf('%1$sSuccess. The extension is now ready to be compiled. To do so, use the%s', PHP_EOL);
 	printf('following steps:%1$s%1$s', PHP_EOL);
-	printf('cd /path/to/php-src%s', PHP_EOL);
-	printf('%sbuildconf%s', $file_prefix, PHP_EOL);
-	printf('%sconfigure --enable-%s%s', $file_prefix, $options['ext'], PHP_EOL);
+	printf('cd /path/to/php-src/%s%s', $options['ext'], PHP_EOL);
+	printf('phpize%s', PHP_EOL);
+	printf('%sconfigure%s', $file_prefix, PHP_EOL);
 	printf('%smake%2$s%2$s', $make_prefix, PHP_EOL);
 	printf('Don\'t forget to run tests once the compilation is done:%s', PHP_EOL);
-	printf('%smake test TESTS=ext/%s/tests%3$s%3$s', $make_prefix, $options['ext'], PHP_EOL);
+	printf('%smake test%2$s%2$s', $make_prefix, PHP_EOL);
 	printf('Thank you for using PHP!%s', PHP_EOL);
 }
 /* }}} */