Add Dockerfile

Dockerfile

@@ -0,0 +1,22 @@
+FROM php:7.4-cli
+
+RUN apt-get update && apt-get install -y \
+    git \
+    curl \
+    libzip-dev \
+    unzip \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN docker-php-ext-install zip
+
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+
+WORKDIR /usr/src/php-cfg
+
+RUN git clone https://github.com/ircmaxell/php-cfg.git .
+
+RUN chmod -R 777 /usr/src/php-cfg
+
+RUN composer install
+
+CMD ["/bin/bash"]

README.md

@@ -28,3 +28,12 @@ To dump the graph, simply use the built-in dumper:
 $dumper = new PHPCfg\Printer\Text();
 echo $dumper->printScript($script);
 ```
+
+Or you can use php-cfg by building the docker
+```bash
+# Building an image
+docker build -t php-cfg .
+
+# Build the container using the image and go directly to bash to use the
+docker run -it php-cfg
+```

getSingleFileGraph.php

@@ -0,0 +1,65 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of PHP-CFG, a Control flow graph implementation for PHP
+ *
+ * @copyright 2015 Anthony Ferrara. All rights reserved
+ * @license MIT See LICENSE at the root of the project for more info
+ */
+
+// Usage:
+// maybe you should install graphviz first
+// php getSingleFileGraph.php demo.php > demo.dot
+// dot -Tpng demo.dot > demo.png
+
+use PhpParser\ParserFactory;
+
+require __DIR__.'/vendor/autoload.php';
+
+$graphviz = false;
+list($fileName, $code) = getCode($argc, $argv);
+
+$parser = new PHPCfg\Parser((new ParserFactory())->create(ParserFactory::PREFER_PHP7));
+
+$declarations = new PHPCfg\Visitor\DeclarationFinder();
+$calls = new PHPCfg\Visitor\CallFinder();
+$variables = new PHPCfg\Visitor\VariableFinder();
+
+$traverser = new PHPCfg\Traverser();
+
+$traverser->addVisitor($declarations);
+$traverser->addVisitor($calls);
+$traverser->addVisitor(new PHPCfg\Visitor\Simplifier());
+$traverser->addVisitor($variables);
+
+$script = $parser->parse($code, __FILE__);
+$traverser->traverse($script);
+
+if ($graphviz) {
+    $dumper = new PHPCfg\Printer\GraphViz();
+    echo $dumper->printScript($script);
+} else {
+    $dumper = new PHPCfg\Printer\Text();
+    echo $dumper->printScript($script);
+}
+
+function getCode($argc, $argv)
+{
+    if ($argc >= 2) {
+        if (strpos($argv[1], '<?php') === 0) {
+            return ['command line code', $argv[1]];
+        }
+
+        return [$argv[1], file_get_contents($argv[1])];
+    }
+
+    return [__FILE__, <<<'EOF'
+<?php
+function foo(array $a) {
+    $a[] = 1;
+}
+EOF
+    ];
+}