separating config-issues from img.php to own config-file

img_config.php

@@ -0,0 +1,120 @@
+<?php
+/**
+ * Configuration for img.php, name the config file the same as your img.php and 
+ * append _config. If you are testing out some in imgtest.php then label that 
+ * config-file imgtest_config.php.
+ *
+ */
+return array(
+
+    /**
+     * Paths, where are all the stuff I should use? 
+     * Append ending slash on directories.
+     */
+    'cimage_class' =>  __DIR__.'/CImage.php',
+    'image_path'   =>  __DIR__.'/img/',
+    'cache_path'   =>  __DIR__.'/cache/',
+
+
+
+    /**
+     * Max image dimensions,
+     * 
+     */
+    'max_width'     => 2000,
+    'max_height'    => 2000,
+
+
+
+    /**
+     * Post processing of images using external tools, set to true or false 
+     * and set command to be executed. 
+     */
+    'postprocessing' => array(
+        'png_filter'        => false,
+        'png_filter_cmd'    => '/usr/local/bin/optipng -q',
+
+        'png_deflate'       => false,
+        'png_deflate_cmd'   => '/usr/local/bin/pngout -q',
+
+        'jpeg_optimize'     => false,
+        'jpeg_optimize_cmd' => '/usr/local/bin/jpegtran -copy none -optimize',
+    ),
+
+
+
+    /**
+     * Predefined size constants. 
+     * 
+     */
+    'size_constant' => function() {
+
+        // Set sizes to map constant to value, easier to use with width or height
+        $sizes = array(
+          'w1' => 613,
+          'w2' => 630,
+        );
+
+        // Add column width to $area, useful for use as predefined size for width (or height).
+        $gridColumnWidth = 30;
+        $gridGutterWidth = 10;
+        $gridColumns     = 24;
+
+        for ($i = 1; $i <= $gridColumns; $i++) {
+            $sizes['c' . $i] = ($gridColumnWidth + $gridGutterWidth) * $i - $gridGutterWidth; 
+        }
+
+        return $sizes;
+    },
+
+
+
+    /**
+     * Predefined aspect ratios. 
+     * 
+     */
+    'aspect_ratio_constant' => function() {
+        return array(
+            '3:1'   => 3/1,
+            '3:2'   => 3/2,
+            '4:3'   => 4/3,
+            '8:5'   => 8/5,
+            '16:10' => 16/10,
+            '16:9'  => 16/9,
+            'golden' => 1.618,
+        );
+    },
+
+
+
+    /**
+     * Set error reporting to match development or production environment 
+     */
+    'error_reporting' => function() {
+        error_reporting(-1);
+        set_time_limit(20);
+    },
+
+
+
+    /**
+     * Set callable handler for exception handeler or set null to use default. 
+     */
+    'exception_handler' => null,
+    /*'exception_handler' => function($exception) {
+        header("Status: 404 Not Found");
+        die('404: ' . $msg);
+    },*/
+
+
+
+    /**
+     * Set callable handler for error page or set null to use default. 
+     */
+    'error_page' => null,
+    /*'error_page' => function($msg) {
+    header("Status: 404 Not Found");
+    die('404: ' . $msg);
+    },*/
+);
+