{"id":43,"date":"2016-04-06T09:40:40","date_gmt":"2016-04-06T09:40:40","guid":{"rendered":"https:\/\/dangnhsite.wordpress.com\/?p=43"},"modified":"2026-08-18T15:35:01","modified_gmt":"2026-08-18T07:35:01","slug":"variable-debug-in-yii-2","status":"publish","type":"post","link":"https:\/\/dangnh.cf\/vi\/2016\/04\/06\/variable-debug-in-yii-2\/","title":{"rendered":"Debug variables in Yii 2"},"content":{"rendered":"<p>I&#8217;ve been working with <a href=\"http:\/\/www.yiiframework.com\">Yii framework version 2.0<\/a> for a few days now, and I find Yii&#8217;s <a href=\"http:\/\/www.yiiframework.com\/doc-2.0\/ext-debug-index.html\">Debugger <\/a>and <a href=\"http:\/\/www.yiiframework.com\/doc-2.0\/yii-helpers-vardumper.html\">vardumper function<\/a> are extremely uncomfortable!<\/p>\n<p>Since for the sake of Simplicity and Quick Development, I&#8217;ve created a helper for those who use Yii. You can just call <strong>dd($var1, $var2, &#8230;.);<\/strong> for dump &amp; die or <strong>d($var1, $var2, &#8230;.);<\/strong> for dump data.<\/p>\n<h2>Installation:<\/h2>\n<ul>\n<li>Create a file so called\u00a0<em>functions.php<\/em> in<\/li>\n<\/ul>\n<blockquote><p>\/common\/config\/<\/p><\/blockquote>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"49\" data-permalink=\"https:\/\/dangnh.cf\/vi\/2016\/04\/06\/variable-debug-in-yii-2\/attachment\/2\/\" data-orig-file=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/2.png?fit=236%2C492&amp;ssl=1\" data-orig-size=\"236,492\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"2\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/2.png?fit=236%2C492&amp;ssl=1\" class=\"wp-image-49 aligncenter\" src=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/2.png?resize=196%2C409\" alt=\"2\" width=\"196\" height=\"409\" srcset=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/2.png?w=236&amp;ssl=1 236w, https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/2.png?resize=144%2C300&amp;ssl=1 144w\" sizes=\"auto, (max-width: 196px) 100vw, 196px\" \/><\/p>\n<ul>\n<li>Paste those code into\u00a0<em>function.php\u00a0<\/em>then save it (please re-format those lines of code, stupid wp.com &gt;:( )<\/li>\n<\/ul>\n<pre class=\"brush: php; title: ; notranslate\" title=\"\">\r\n&lt;?php\r\n\/*\r\n* Code by DangNH\r\n* Date: Apr 4, 2016\r\n*\/\r\n \r\n\/**\r\n* Debug function\r\n* d($var);\r\n*\/\r\nfunction d() {\r\n echo '&lt;pre&gt;';\r\n for ($i = 0; $i &lt; func_num_args(); $i++) {\r\n yii\\helpers\\VarDumper::dump(func_get_arg($i), 10, true);\r\n }\r\n echo '&lt;\/pre&gt;';\r\n}\r\n \r\n\/**\r\n* Debug function with die() after\r\n* dd($var);\r\n*\/\r\nfunction dd() {\r\n for ($i = 0; $i &lt; func_num_args(); $i++) {\r\n  d(func_get_arg($i));\r\n }\r\n die();\r\n}\r\n<\/pre>\n<ul>\n<li>Now, edit\u00a0<em>bootstrap.php\u00a0<\/em>in<\/li>\n<\/ul>\n<blockquote><p>\/common\/config\/bootstrap.php<\/p><\/blockquote>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"51\" data-permalink=\"https:\/\/dangnh.cf\/vi\/2016\/04\/06\/variable-debug-in-yii-2\/attachment\/3\/\" data-orig-file=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/3.png?fit=200%2C148&amp;ssl=1\" data-orig-size=\"200,148\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"3\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/3.png?fit=200%2C148&amp;ssl=1\" class=\"size-full wp-image-51 aligncenter\" src=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/3.png?resize=200%2C148\" alt=\"3\" width=\"200\" height=\"148\" \/><\/p>\n<p style=\"padding-left: 30px;\">and then add this line of code to the top:<\/p>\n<p>&nbsp;<\/p>\n<pre class=\"brush: php; title: ; notranslate\" title=\"\">\r\nrequire('functions.php'); \/\/add custom helper functions to the whole application\r\n<\/pre>\n<p style=\"padding-left: 30px;\">like so<\/p>\n<p style=\"padding-left: 30px;\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"52\" data-permalink=\"https:\/\/dangnh.cf\/vi\/2016\/04\/06\/variable-debug-in-yii-2\/attachment\/4\/\" data-orig-file=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/4.png?fit=659%2C128&amp;ssl=1\" data-orig-size=\"659,128\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"4\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/4.png?fit=659%2C128&amp;ssl=1\" class=\"size-full wp-image-52 aligncenter\" src=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/4.png?resize=659%2C128\" alt=\"4\" width=\"659\" height=\"128\" srcset=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/4.png?w=659&amp;ssl=1 659w, https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/4.png?resize=300%2C58&amp;ssl=1 300w\" sizes=\"auto, (max-width: 659px) 100vw, 659px\" \/><\/p>\n<h3>Voila! Now you can call <span style=\"color: #ff0000;\">d($var1, $var2, $varx);<\/span> for dump or <span style=\"color: #ff0000;\">dd($var1, $var2, $varx)<\/span> for dump then die anywhere in your application!<\/h3>\n<h3>Sample result:<\/h3>\n<div data-carousel-extra='{&quot;blog_id&quot;:1,&quot;permalink&quot;:&quot;https:\/\/dangnh.cf\/vi\/2016\/04\/06\/variable-debug-in-yii-2\/&quot;}' id='gallery-1' class='gallery galleryid-43 gallery-columns-1 gallery-size-medium'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/5.png?ssl=1\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"56\" src=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/5.png?fit=300%2C56&amp;ssl=1\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-1-55\" srcset=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/5.png?w=637&amp;ssl=1 637w, https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/5.png?resize=300%2C56&amp;ssl=1 300w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" data-attachment-id=\"55\" data-permalink=\"https:\/\/dangnh.cf\/vi\/2016\/04\/06\/variable-debug-in-yii-2\/attachment\/5\/\" data-orig-file=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/5.png?fit=637%2C118&amp;ssl=1\" data-orig-size=\"637,118\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"5\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Call debug function&lt;\/p&gt;\" data-large-file=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/5.png?fit=637%2C118&amp;ssl=1\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-55'>\n\t\t\t\tCall debug function\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/6.png?ssl=1\"><img loading=\"lazy\" decoding=\"async\" width=\"87\" height=\"300\" src=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/6.png?fit=87%2C300&amp;ssl=1\" class=\"attachment-medium size-medium\" alt=\"\" aria-describedby=\"gallery-1-56\" srcset=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/6.png?w=256&amp;ssl=1 256w, https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/6.png?resize=87%2C300&amp;ssl=1 87w\" sizes=\"auto, (max-width: 87px) 100vw, 87px\" data-attachment-id=\"56\" data-permalink=\"https:\/\/dangnh.cf\/vi\/2016\/04\/06\/variable-debug-in-yii-2\/attachment\/6\/\" data-orig-file=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/6.png?fit=256%2C886&amp;ssl=1\" data-orig-size=\"256,886\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"6\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;result in browser&lt;\/p&gt;\" data-large-file=\"https:\/\/i0.wp.com\/dangnh.cf\/wp-content\/uploads\/2016\/04\/6.png?fit=256%2C886&amp;ssl=1\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-56'>\n\t\t\t\tresult in browser\n\t\t\t\t<\/figcaption><\/figure>\n\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Quick ways to dump and inspect variables while debugging in Yii 2.<\/p>","protected":false},"author":1,"featured_media":46,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[5],"tags":[],"class_list":["post-43","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ 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