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1 | <?php |
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2 | /** |
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3 | * Bookmark Template Functions for usage in Themes |
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4 | * |
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5 | * @package WordPress |
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6 | * @subpackage Template |
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7 | */ |
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8 | |||
9 | /** |
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10 | * The formatted output of a list of bookmarks. |
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11 | * |
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12 | * The $bookmarks array must contain bookmark objects and will be iterated over |
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13 | * to retrieve the bookmark to be used in the output. |
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14 | * |
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15 | * The output is formatted as HTML with no way to change that format. However, |
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16 | * what is between, before, and after can be changed. The link itself will be |
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17 | * HTML. |
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18 | * |
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19 | * This function is used internally by wp_list_bookmarks() and should not be |
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20 | * used by themes. |
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21 | * |
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22 | * @since 2.1.0 |
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23 | * @access private |
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24 | * |
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25 | * @param array $bookmarks List of bookmarks to traverse. |
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26 | * @param string|array $args { |
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27 | * Optional. Bookmarks arguments. |
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28 | * |
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29 | * @type int|bool $show_updated Whether to show the time the bookmark was last updated. |
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30 | * Accepts 1|true or 0|false. Default 0|false. |
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31 | * @type int|bool $show_description Whether to show the bookmakr description. Accepts 1|true, |
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32 | * Accepts 1|true or 0|false. Default 0|false. |
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33 | * @type int|bool $show_images Whether to show the link image if available. Accepts 1|true |
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34 | * or 0|false. Default 1|true. |
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35 | * @type int|bool $show_name Whether to show link name if available. Accepts 1|true or |
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36 | * 0|false. Default 0|false. |
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37 | * @type string $before The HTML or text to prepend to each bookmark. Default `<li>`. |
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38 | * @type string $after The HTML or text to append to each bookmark. Default `</li>`. |
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39 | * @type string $link_before The HTML or text to prepend to each bookmark inside the anchor |
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40 | * tags. Default empty. |
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41 | * @type string $link_after The HTML or text to append to each bookmark inside the anchor |
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42 | * tags. Default empty. |
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43 | * @type string $between The string for use in between the link, description, and image. |
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44 | * Default "\n". |
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45 | * @type int|bool $show_rating Whether to show the link rating. Accepts 1|true or 0|false. |
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46 | * Default 0|false. |
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47 | * |
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48 | * } |
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49 | * @return string Formatted output in HTML |
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50 | */ |
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51 | function _walk_bookmarks( $bookmarks, $args = '' ) { |
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52 | $defaults = array( |
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53 | 'show_updated' => 0, 'show_description' => 0, |
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54 | 'show_images' => 1, 'show_name' => 0, |
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55 | 'before' => '<li>', 'after' => '</li>', 'between' => "\n", |
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56 | 'show_rating' => 0, 'link_before' => '', 'link_after' => '' |
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57 | ); |
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58 | |||
59 | $r = wp_parse_args( $args, $defaults ); |
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60 | |||
61 | $output = ''; // Blank string to start with. |
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62 | |||
63 | foreach ( (array) $bookmarks as $bookmark ) { |
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64 | if ( ! isset( $bookmark->recently_updated ) ) { |
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65 | $bookmark->recently_updated = false; |
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66 | } |
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67 | $output .= $r['before']; |
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68 | if ( $r['show_updated'] && $bookmark->recently_updated ) { |
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69 | $output .= '<em>'; |
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70 | } |
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71 | $the_link = '#'; |
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72 | if ( ! empty( $bookmark->link_url ) ) { |
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73 | $the_link = esc_url( $bookmark->link_url ); |
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74 | } |
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75 | $desc = esc_attr( sanitize_bookmark_field( 'link_description', $bookmark->link_description, $bookmark->link_id, 'display' ) ); |
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76 | $name = esc_attr( sanitize_bookmark_field( 'link_name', $bookmark->link_name, $bookmark->link_id, 'display' ) ); |
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77 | $title = $desc; |
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78 | |||
79 | if ( $r['show_updated'] ) { |
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80 | if ( '00' != substr( $bookmark->link_updated_f, 0, 2 ) ) { |
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81 | $title .= ' ('; |
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82 | $title .= sprintf( |
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83 | __('Last updated: %s'), |
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84 | date( |
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85 | get_option( 'links_updated_date_format' ), |
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86 | $bookmark->link_updated_f + ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS ) |
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87 | ) |
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88 | ); |
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89 | $title .= ')'; |
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90 | } |
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91 | } |
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92 | $alt = ' alt="' . $name . ( $r['show_description'] ? ' ' . $title : '' ) . '"'; |
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93 | |||
94 | if ( '' != $title ) { |
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95 | $title = ' title="' . $title . '"'; |
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96 | } |
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97 | $rel = $bookmark->link_rel; |
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98 | if ( '' != $rel ) { |
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99 | $rel = ' rel="' . esc_attr($rel) . '"'; |
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100 | } |
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101 | $target = $bookmark->link_target; |
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102 | if ( '' != $target ) { |
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103 | $target = ' target="' . $target . '"'; |
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104 | } |
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105 | $output .= '<a href="' . $the_link . '"' . $rel . $title . $target . '>'; |
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106 | |||
107 | $output .= $r['link_before']; |
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108 | |||
109 | if ( $bookmark->link_image != null && $r['show_images'] ) { |
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110 | View Code Duplication | if ( strpos( $bookmark->link_image, 'http' ) === 0 ) { |
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111 | $output .= "<img src=\"$bookmark->link_image\" $alt $title />"; |
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112 | } else { // If it's a relative path |
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113 | $output .= "<img src=\"" . get_option('siteurl') . "$bookmark->link_image\" $alt $title />"; |
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114 | } |
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115 | if ( $r['show_name'] ) { |
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116 | $output .= " $name"; |
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117 | } |
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118 | } else { |
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119 | $output .= $name; |
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120 | } |
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121 | |||
122 | $output .= $r['link_after']; |
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123 | |||
124 | $output .= '</a>'; |
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125 | |||
126 | if ( $r['show_updated'] && $bookmark->recently_updated ) { |
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127 | $output .= '</em>'; |
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128 | } |
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129 | |||
130 | if ( $r['show_description'] && '' != $desc ) { |
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131 | $output .= $r['between'] . $desc; |
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132 | } |
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133 | |||
134 | if ( $r['show_rating'] ) { |
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135 | $output .= $r['between'] . sanitize_bookmark_field( |
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136 | 'link_rating', |
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137 | $bookmark->link_rating, |
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138 | $bookmark->link_id, |
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139 | 'display' |
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140 | ); |
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141 | } |
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142 | $output .= $r['after'] . "\n"; |
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143 | } // end while |
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144 | |||
145 | return $output; |
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146 | } |
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147 | |||
148 | /** |
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149 | * Retrieve or echo all of the bookmarks. |
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150 | * |
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151 | * List of default arguments are as follows: |
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152 | * |
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153 | * These options define how the Category name will appear before the category |
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154 | * links are displayed, if 'categorize' is 1. If 'categorize' is 0, then it will |
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155 | * display for only the 'title_li' string and only if 'title_li' is not empty. |
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156 | * |
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157 | * @since 2.1.0 |
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158 | * |
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159 | * @see _walk_bookmarks() |
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160 | * |
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161 | * @param string|array $args { |
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162 | * Optional. String or array of arguments to list bookmarks. |
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163 | * |
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164 | * @type string $orderby How to order the links by. Accepts post fields. Default 'name'. |
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165 | * @type string $order Whether to order bookmarks in ascending or descending order. |
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166 | * Accepts 'ASC' (ascending) or 'DESC' (descending). Default 'ASC'. |
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167 | * @type int $limit Amount of bookmarks to display. Accepts 1+ or -1 for all. |
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168 | * Default -1. |
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169 | * @type string $category Comma-separated list of category ids to include links from. |
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170 | * Default empty. |
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171 | * @type string $category_name Category to retrieve links for by name. Default empty. |
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172 | * @type int|bool $hide_invisible Whether to show or hide links marked as 'invisible'. Accepts |
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173 | * 1|true or 0|false. Default 1|true. |
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174 | * @type int|bool $show_updated Whether to display the time the bookmark was last updated. |
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175 | * Accepts 1|true or 0|false. Default 0|false. |
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176 | * @type int|bool $echo Whether to echo or return the formatted bookmarks. Accepts |
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177 | * 1|true (echo) or 0|false (return). Default 1|true. |
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178 | * @type int|bool $categorize Whether to show links listed by category or in a single column. |
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179 | * Accepts 1|true (by category) or 0|false (one column). Default 1|true. |
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180 | * @type int|bool $show_description Whether to show the bookmark descriptions. Accepts 1|true or 0|false. |
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181 | * Default 0|false. |
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182 | * @type string $title_li What to show before the links appear. Default 'Bookmarks'. |
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183 | * @type string $title_before The HTML or text to prepend to the $title_li string. Default '<h2>'. |
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184 | * @type string $title_after The HTML or text to append to the $title_li string. Default '</h2>'. |
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185 | * @type string $class The CSS class to use for the $title_li. Default 'linkcat'. |
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186 | * @type string $category_before The HTML or text to prepend to $title_before if $categorize is true. |
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187 | * String must contain '%id' and '%class' to inherit the category ID and |
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188 | * the $class argument used for formatting in themes. |
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189 | * Default '<li id="%id" class="%class">'. |
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190 | * @type string $category_after The HTML or text to append to $title_after if $categorize is true. |
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191 | * Default '</li>'. |
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192 | * @type string $category_orderby How to order the bookmark category based on term scheme if $categorize |
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193 | * is true. Default 'name'. |
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194 | * @type string $category_order Whether to order categories in ascending or descending order if |
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195 | * $categorize is true. Accepts 'ASC' (ascending) or 'DESC' (descending). |
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196 | * Default 'ASC'. |
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197 | * } |
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198 | * @return string|void Will only return if echo option is set to not echo. Default is not return anything. |
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199 | */ |
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200 | function wp_list_bookmarks( $args = '' ) { |
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201 | $defaults = array( |
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202 | 'orderby' => 'name', 'order' => 'ASC', |
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203 | 'limit' => -1, 'category' => '', 'exclude_category' => '', |
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204 | 'category_name' => '', 'hide_invisible' => 1, |
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205 | 'show_updated' => 0, 'echo' => 1, |
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206 | 'categorize' => 1, 'title_li' => __('Bookmarks'), |
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207 | 'title_before' => '<h2>', 'title_after' => '</h2>', |
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208 | 'category_orderby' => 'name', 'category_order' => 'ASC', |
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209 | 'class' => 'linkcat', 'category_before' => '<li id="%id" class="%class">', |
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210 | 'category_after' => '</li>' |
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211 | ); |
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212 | |||
213 | $r = wp_parse_args( $args, $defaults ); |
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214 | |||
215 | $output = ''; |
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216 | |||
217 | if ( ! is_array( $r['class'] ) ) { |
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218 | $r['class'] = explode( ' ', $r['class'] ); |
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219 | } |
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220 | $r['class'] = array_map( 'sanitize_html_class', $r['class'] ); |
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221 | $r['class'] = trim( join( ' ', $r['class'] ) ); |
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222 | |||
223 | if ( $r['categorize'] ) { |
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224 | $cats = get_terms( 'link_category', array( |
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225 | 'name__like' => $r['category_name'], |
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226 | 'include' => $r['category'], |
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227 | 'exclude' => $r['exclude_category'], |
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228 | 'orderby' => $r['category_orderby'], |
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229 | 'order' => $r['category_order'], |
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230 | 'hierarchical' => 0 |
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231 | ) ); |
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232 | if ( empty( $cats ) ) { |
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233 | $r['categorize'] = false; |
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234 | } |
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235 | } |
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236 | |||
237 | if ( $r['categorize'] ) { |
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238 | // Split the bookmarks into ul's for each category |
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239 | foreach ( (array) $cats as $cat ) { |
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0 ignored issues
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show
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240 | $params = array_merge( $r, array( 'category' => $cat->term_id ) ); |
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241 | $bookmarks = get_bookmarks( $params ); |
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242 | if ( empty( $bookmarks ) ) { |
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243 | continue; |
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244 | } |
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245 | $output .= str_replace( |
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246 | array( '%id', '%class' ), |
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247 | array( "linkcat-$cat->term_id", $r['class'] ), |
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248 | $r['category_before'] |
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249 | ); |
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250 | /** |
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251 | * Filters the bookmarks category name. |
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252 | * |
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253 | * @since 2.2.0 |
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254 | * |
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255 | * @param string $cat_name The category name of bookmarks. |
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256 | */ |
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257 | $catname = apply_filters( 'link_category', $cat->name ); |
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258 | |||
259 | $output .= $r['title_before']; |
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260 | $output .= $catname; |
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261 | $output .= $r['title_after']; |
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262 | $output .= "\n\t<ul class='xoxo blogroll'>\n"; |
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263 | $output .= _walk_bookmarks( $bookmarks, $r ); |
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264 | $output .= "\n\t</ul>\n"; |
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265 | $output .= $r['category_after'] . "\n"; |
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266 | } |
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267 | } else { |
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268 | //output one single list using title_li for the title |
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269 | $bookmarks = get_bookmarks( $r ); |
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270 | |||
271 | if ( ! empty( $bookmarks ) ) { |
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272 | if ( ! empty( $r['title_li'] ) ) { |
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273 | $output .= str_replace( |
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274 | array( '%id', '%class' ), |
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275 | array( "linkcat-" . $r['category'], $r['class'] ), |
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276 | $r['category_before'] |
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277 | ); |
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278 | $output .= $r['title_before']; |
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279 | $output .= $r['title_li']; |
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280 | $output .= $r['title_after']; |
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281 | $output .= "\n\t<ul class='xoxo blogroll'>\n"; |
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282 | $output .= _walk_bookmarks( $bookmarks, $r ); |
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283 | $output .= "\n\t</ul>\n"; |
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284 | $output .= $r['category_after'] . "\n"; |
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285 | } else { |
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286 | $output .= _walk_bookmarks( $bookmarks, $r ); |
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287 | } |
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288 | } |
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289 | } |
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290 | |||
291 | /** |
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292 | * Filters the bookmarks list before it is echoed or returned. |
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293 | * |
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294 | * @since 2.5.0 |
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295 | * |
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296 | * @param string $html The HTML list of bookmarks. |
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297 | */ |
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298 | $html = apply_filters( 'wp_list_bookmarks', $output ); |
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299 | |||
300 | if ( ! $r['echo'] ) { |
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301 | return $html; |
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302 | } |
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303 | echo $html; |
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304 | } |
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305 |
If you define a variable conditionally, it can happen that it is not defined for all execution paths.
Let’s take a look at an example:
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.
Available Fixes
Check for existence of the variable explicitly:
Define a default value for the variable:
Add a value for the missing path: