{"id":698,"date":"2020-11-04T02:02:59","date_gmt":"2020-11-04T02:02:59","guid":{"rendered":"https:\/\/s-oneill.com\/sov02\/?page_id=698"},"modified":"2020-11-04T02:06:22","modified_gmt":"2020-11-04T02:06:22","slug":"wordpress101","status":"publish","type":"page","link":"https:\/\/s-oneill.com\/sov02\/wordpress101\/","title":{"rendered":"WordPress101"},"content":{"rendered":"\n

\n Basic WP plugin steps\n<\/p>\n\n

\n\n\n

Step 1 – Create .php file<\/h3>\n
\n\n

Create an appropriately named folder and php file
\n    \/wp-content\/plugins\/pluginname\/pluginname.php\n <\/p>\n

Begin the file with an opening <?php tag followed by the standard comment for WP plugins\n <\/p>\n

  \/ *\n  Plugin Name: Plugin Name Script\n  Plugin URI: https:\/\/s-oneill.com\/\n  Description: Load scripts for Plugin Name page\n  Version: 1.0\n  Author: Sean ONeill\n  Author URI: https:\/\/s-oneill.com\n  License: GPLv2 or later\n  * \/\n<\/pre>\n    
\n      The Plugin Name will appear in the Admin Plugins area for you to activate when ready.\n    <\/p>\n\n  <\/div>\n\n\n\n  
Step 2 – Add plugin function(s) and action(s) <\/h3>\n\n   
\n    
\n      Create php function(s) to carry out the purpose of the plugin. \n    
\n      Note: php functions must be called (or “hook”ed) into some action in  the WP process using a function:  
\n    <\/p>\n\n\n
  add_action( 'init', 'add_Cookie' )\n\n  function add_Cookie() {\n    setcookie(\"last_visit_time\", date(\"r\"), time()+60*60*24*30, \"\/\");\n  }\n<\/pre>\n\n    
\n      The add action<\/strong> function has two required parameters,  
\n      1) Action name (there are many different WP actions )  
\n      2) Name of your function.  
\n      \n    <\/p>\n\n
  add_action( \n    string $tag, \/\/ req. string - the action name\n    callable $function_to_add, \/\/ req. string - the function to fire \n    int $priority = 10,  \/\/ opt. int. - priority\/call order, 1 called 1st def 10\n    int $accepted_args = 1 \/\/ opt. int. - # of args fn accepts, default is 1\n  )\n<\/pre>\n    
\n      \n      (The priority and accepted_args parameters are optional ) 
 
\n    <\/p>\n\n  <\/div>\n\n\n\n  
Step 3 – Add JS <\/h3>\n\n  
\n    
\n      Any JS needed in the plugin must be included using: \n      
\n         wp_enqueue_script()<\/strong>\n    <\/p>\n
  define( 'MYSCRIPT_VERSION', 1);\n  function our_function_name($hook) {\n\n    wp_enqueue_script( \n      'my-plugin-script-name', \/\/ name of script\n      plugins_url('js\/my-plugin-script-name.js', __FILE__ ), \/\/ location\n      array( 'jquery' ), \/\/ dependencies\n      MYSCRIPT_VERSION, \/\/ version (declared in a var above)\n      true \/\/ include script in footer (false will include in header)\n    );\n  }\n  add_action( 'admin_enqueue_scripts', 'our_function_name' )\n<\/pre>\n    
\n      Note: the JS file can be in a \/js folder in your plugin, or external. Be sure to use the proper location in the 2nd param.\n      
\n      Also, __FILE__ tells the plugins URL function that we’re referencing a file in this plugin\n    <\/p>\n\n<\/div>\n\n\n\n  
Step 4 – Restrict plugin to specific pages<\/h3>\n   
\n    
\n      Precede the wp_enqueue_script() function with an if() to restrict the script to specific pages\n    <\/p>\n
  function our_function_name_w_enqueue_script($hook) {\n\n      if ( !is_page( 'about') )\n      return;\n\n     wp_enqueue_script( \n      'my-plugin-script-name', \/\/ name of script\n      plugins_url('js\/my-plugin-script-name.js', __FILE__ ), \/\/ location\n      array( 'jquery' ), \/\/ dependencies\n      MYSCRIPT_VERSION, \/\/ version (declared in a var above)\n      true \/\/ include script in footer (false will include in header)\n    );\n  }\n  add_action( 'admin_enqueue_scripts', 'our_function_name' )\n}\n add_action( 'admin_enqueue_scripts', 'our_function_name_w_enqueue_script' )\n<\/pre>\n  <\/div>\n\n\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"
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