WordPress 4.2.1-scripts

[autoinstalls/wordpress.git] / wp-admin / install-helper.php

diff --git a/wp-admin/install-helper.php b/wp-admin/install-helper.php
index b53376eb3ca60eb9452505b07ab45c9f6396ee68..b64494af4476aff545f4fbf397d115d2fa79c808 100644 (file)
--- a/wp-admin/install-helper.php
+++ b/wp-admin/install-helper.php
@@ -1,12 +1,53 @@
 <?php
 <?php

-require_once(dirname(dirname(__FILE__)).'/wp-config.php');
-$debug = 0;
+/**
+ * Plugins may load this file to gain access to special helper functions for
+ * plugin installation. This file is not included by WordPress and it is
+ * recommended, to prevent fatal errors, that this file is included using
+ * require_once().
+ *
+ * These functions are not optimized for speed, but they should only be used
+ * once in a while, so speed shouldn't be a concern. If it is and you are
+ * needing to use these functions a lot, you might experience time outs. If you
+ * do, then it is advised to just write the SQL code yourself.
+ *
+ *     check_column( 'wp_links', 'link_description', 'mediumtext' );
+ *     if ( check_column( $wpdb->comments, 'comment_author', 'tinytext' ) ) {
+ *         echo "ok\n";
+ *     }
+ *
+ *     $error_count = 0;
+ *     $tablename = $wpdb->links;
+ *     // Check the column.
+ *     if ( ! check_column($wpdb->links, 'link_description', 'varchar( 255 )' ) ) {
+ *         $ddl = "ALTER TABLE $wpdb->links MODIFY COLUMN link_description varchar(255) NOT NULL DEFAULT '' ";
+ *         $q = $wpdb->query( $ddl );
+ *     }
+ *
+ *     if ( check_column( $wpdb->links, 'link_description', 'varchar( 255 )' ) ) {
+ *         $res .= $tablename . ' - ok <br />';
+ *     } else {
+ *         $res .= 'There was a problem with ' . $tablename . '<br />';
+ *         ++$error_count;
+ *     }
+ *
+ * @package WordPress
+ * @subpackage Plugin
+ */
+
+/** Load WordPress Bootstrap */
+require_once(dirname(dirname(__FILE__)).'/wp-load.php');

 
 

+if ( ! function_exists('maybe_create_table') ) :

 /**
 /**

- ** maybe_create_table()
- ** Create db table if it doesn't exist.
- ** Returns:  true if already exists or on successful completion
- **           false on error
+ * Create database table, if it doesn't already exist.
+ *
+ * @since 1.0.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ *
+ * @param string $table_name Database table name.
+ * @param string $create_ddl Create database table SQL.
+ * @return bool False on error, true if already exists or success.

  */
 function maybe_create_table($table_name, $create_ddl) {
        global $wpdb;
  */
 function maybe_create_table($table_name, $create_ddl) {
        global $wpdb;


@@ -15,9 +56,10 @@ function maybe_create_table($table_name, $create_ddl) {
                        return true;
                }
        }
                        return true;
                }
        }

-       //didn't find it try to create it.
-       $q = $wpdb->query($create_ddl);
-       // we cannot directly tell that whether this succeeded!
+       // Didn't find it, so try to create it.
+       $wpdb->query($create_ddl);
+
+       // We cannot directly tell that whether this succeeded!

        foreach ($wpdb->get_col("SHOW TABLES",0) as $table ) {
                if ($table == $table_name) {
                        return true;
        foreach ($wpdb->get_col("SHOW TABLES",0) as $table ) {
                if ($table == $table_name) {
                        return true;


@@ -25,24 +67,34 @@ function maybe_create_table($table_name, $create_ddl) {
        }
        return false;
 }
        }
        return false;
 }

+endif;

 
 

+if ( ! function_exists('maybe_add_column') ) :

 /**
 /**

- ** maybe_add_column()
- ** Add column to db table if it doesn't exist.
- ** Returns:  true if already exists or on successful completion
- **           false on error
+ * Add column to database table, if column doesn't already exist in table.
+ *
+ * @since 1.0.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ *
+ * @param string $table_name Database table name
+ * @param string $column_name Table column name
+ * @param string $create_ddl SQL to add column to table.
+ * @return bool False on failure. True, if already exists or was successful.

  */
 function maybe_add_column($table_name, $column_name, $create_ddl) {
  */
 function maybe_add_column($table_name, $column_name, $create_ddl) {

-       global $wpdb, $debug;
+       global $wpdb;

        foreach ($wpdb->get_col("DESC $table_name",0) as $column ) {
        foreach ($wpdb->get_col("DESC $table_name",0) as $column ) {

-               if ($debug) echo("checking $column == $column_name<br />");
-                       if ($column == $column_name) {
-                               return true;
-                       }
+
+               if ($column == $column_name) {
+                       return true;
+               }

        }
        }

-       //didn't find it try to create it.
-       $q = $wpdb->query($create_ddl);
-       // we cannot directly tell that whether this succeeded!
+
+       // Didn't find it, so try to create it.
+       $wpdb->query($create_ddl);
+
+       // We cannot directly tell that whether this succeeded!

        foreach ($wpdb->get_col("DESC $table_name",0) as $column ) {
                if ($column == $column_name) {
                        return true;
        foreach ($wpdb->get_col("DESC $table_name",0) as $column ) {
                if ($column == $column_name) {
                        return true;


@@ -50,21 +102,29 @@ function maybe_add_column($table_name, $column_name, $create_ddl) {
        }
        return false;
 }
        }
        return false;
 }

-
+endif;

 
 /**
 
 /**

- ** maybe_drop_column()
- ** Drop column from db table if it exists.
- ** Returns:  true if it doesn't already exist or on successful drop
- **           false on error
+ * Drop column from database table, if it exists.
+ *
+ * @since 1.0.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ *
+ * @param string $table_name Table name
+ * @param string $column_name Column name
+ * @param string $drop_ddl SQL statement to drop column.
+ * @return bool False on failure, true on success or doesn't exist.

  */
 function maybe_drop_column($table_name, $column_name, $drop_ddl) {
        global $wpdb;
        foreach ($wpdb->get_col("DESC $table_name",0) as $column ) {
                if ($column == $column_name) {
  */
 function maybe_drop_column($table_name, $column_name, $drop_ddl) {
        global $wpdb;
        foreach ($wpdb->get_col("DESC $table_name",0) as $column ) {
                if ($column == $column_name) {

-                       //found it try to drop it.
-                       $q = $wpdb->query($drop_ddl);
-                       // we cannot directly tell that whether this succeeded!
+
+                       // Found it, so try to drop it.
+                       $wpdb->query($drop_ddl);
+
+                       // We cannot directly tell that whether this succeeded!

                        foreach ($wpdb->get_col("DESC $table_name",0) as $column ) {
                                if ($column == $column_name) {
                                        return false;
                        foreach ($wpdb->get_col("DESC $table_name",0) as $column ) {
                                if ($column == $column_name) {
                                        return false;


@@ -72,81 +132,67 @@ function maybe_drop_column($table_name, $column_name, $drop_ddl) {
                        }
                }
        }
                        }
                }
        }

-       // else didn't find it
+       // Else didn't find it.

        return true;
 }
 
        return true;
 }
 

-

 /**
 /**

- ** check_column()
- ** Check column matches passed in criteria.
- ** Pass in null to skip checking that criteria
- ** Returns:  true if it matches
- **           false otherwise
- ** (case sensitive) Column names returned from DESC table are:
- **      Field
- **      Type
- **      Null
- **      Key
- **      Default
- **      Extra
+ * Check column matches criteria.
+ *
+ * Uses the SQL DESC for retrieving the table info for the column. It will help
+ * understand the parameters, if you do more research on what column information
+ * is returned by the SQL statement. Pass in null to skip checking that
+ * criteria.
+ *
+ * Column names returned from DESC table are case sensitive and are listed:
+ *      Field
+ *      Type
+ *      Null
+ *      Key
+ *      Default
+ *      Extra
+ *
+ * @since 1.0.0
+ *
+ * @param string $table_name Table name
+ * @param string $col_name Column name
+ * @param string $col_type Column type
+ * @param bool $is_null Optional. Check is null.
+ * @param mixed $key Optional. Key info.
+ * @param mixed $default Optional. Default value.
+ * @param mixed $extra Optional. Extra value.
+ * @return bool True, if matches. False, if not matching.

  */
 function check_column($table_name, $col_name, $col_type, $is_null = null, $key = null, $default = null, $extra = null) {
  */
 function check_column($table_name, $col_name, $col_type, $is_null = null, $key = null, $default = null, $extra = null) {

-       global $wpdb, $debug;
+       global $wpdb;

        $diffs = 0;
        $results = $wpdb->get_results("DESC $table_name");
 
        foreach ($results as $row ) {
        $diffs = 0;
        $results = $wpdb->get_results("DESC $table_name");
 
        foreach ($results as $row ) {

-               if ($debug > 1) print_r($row);
-                       if ($row->Field == $col_name) {
-                               // got our column, check the params
-                               if ($debug) echo ("checking $row->Type against $col_type\n");
-                               if (($col_type != null) && ($row->Type != $col_type)) {
-                                       ++$diffs;
-                               }
-                               if (($is_null != null) && ($row->Null != $is_null)) {
-                                       ++$diffs;
-                               }
-                               if (($key != null) && ($row->Key  != $key)) {
-                                       ++$diffs;
-                               }
-                               if (($default != null) && ($row->Default != $default)) {
-                                       ++$diffs;
-                               }
-                               if (($extra != null) && ($row->Extra != $extra)) {
-                                       ++$diffs;
-                               }
-                               if ($diffs > 0) {
-                                       if ($debug) echo ("diffs = $diffs returning false\n");
-                                       return false;
-                               }
-                               return true;
-                       } // end if found our column
-       }
-       return false;
-}

 
 

-/*
-echo "<p>testing</p>";
-echo "<pre>";
+               if ($row->Field == $col_name) {

 
 

-//check_column('wp_links', 'link_description', 'mediumtext');
-//if (check_column($wpdb->comments, 'comment_author', 'tinytext'))
-//    echo "ok\n";
-$error_count = 0;
-$tablename = $wpdb->links;
-// check the column
-if (!check_column($wpdb->links, 'link_description', 'varchar(255)'))
-{
-       $ddl = "ALTER TABLE $wpdb->links MODIFY COLUMN link_description varchar(255) NOT NULL DEFAULT '' ";
-       $q = $wpdb->query($ddl);
-}
-if (check_column($wpdb->links, 'link_description', 'varchar(255)')) {
-       $res .= $tablename . ' - ok <br />';
-} else {
-       $res .= 'There was a problem with ' . $tablename . '<br />';
-       ++$error_count;
+                       // Got our column, check the params.
+                       if (($col_type != null) && ($row->Type != $col_type)) {
+                               ++$diffs;
+                       }
+                       if (($is_null != null) && ($row->Null != $is_null)) {
+                               ++$diffs;
+                       }
+                       if (($key != null) && ($row->Key  != $key)) {
+                               ++$diffs;
+                       }
+                       if (($default != null) && ($row->Default != $default)) {
+                               ++$diffs;
+                       }
+                       if (($extra != null) && ($row->Extra != $extra)) {
+                               ++$diffs;
+                       }
+                       if ($diffs > 0) {
+                               return false;
+                       }
+                       return true;
+               } // end if found our column
+       }
+       return false;

 }
 }

-echo "</pre>";
-*/
-?>