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What this is
This file is included in the DevDaily.com
"PHP Source Code
Warehouse" project. The intent of this project is to help you "Learn
PHP by Example" TM.
Other links
The source code
<?php
function url_shorten ($url) {
$short_url = str_replace('http://', '', stripslashes($url));
$short_url = str_replace('www.', '', $short_url);
if ('/' == substr($short_url, -1))
$short_url = substr($short_url, 0, -1);
if (strlen($short_url) > 35)
$short_url = substr($short_url, 0, 32).'...';
return $short_url;
}
function selected($selected, $current) {
if ($selected == $current) echo ' selected="selected"';
}
function checked($checked, $current) {
if ($checked == $current) echo ' checked="checked"';
}
function get_nested_categories($default = 0) {
global $post_ID, $tablecategories, $tablepost2cat, $mode, $wpdb;
if ($post_ID) {
$checked_categories = $wpdb->get_col("
SELECT category_id
FROM $tablecategories, $tablepost2cat
WHERE $tablepost2cat.category_id = cat_ID AND $tablepost2cat.post_id = '$post_ID'
");
} else {
$checked_categories[] = $default;
}
$categories = $wpdb->get_results("SELECT * FROM $tablecategories ORDER BY category_parent DESC, cat_name ASC");
$result = array();
foreach($categories as $category) {
$array_category = get_object_vars($category);
$me = 0 + $category->cat_ID;
$parent = 0 + $category->category_parent;
if (isset($result[$me])) $array_category['children'] = $result[$me];
$array_category['checked'] = in_array($category->cat_ID, $checked_categories);
$array_category['cat_name'] = stripslashes($category->cat_name);
$result[$parent][] = $array_category;
}
return $result[0];
}
function write_nested_categories($categories) {
foreach($categories as $category) {
echo '<label for="category-', $category['cat_ID'], '" class="selectit"><input value="', $category['cat_ID'],
'" type="checkbox" name="post_category[]" id="category-', $category['cat_ID'], '"',
($category['checked'] ? ' checked="checked"' : ""), '/> ', $category['cat_name'], "</label>\n";
if(isset($category['children'])) {
echo "\n<span class='cat-nest'>\n";
write_nested_categories($category['children']);
echo "</span>\n";
}
}
}
function dropdown_categories($default = 0) {
write_nested_categories(get_nested_categories($default));
}
// Dandy new recursive multiple category stuff.
function cat_rows($parent = 0, $level = 0, $categories = 0) {
global $wpdb, $tablecategories, $tablepost2cat, $bgcolor;
if (!$categories) {
$categories = $wpdb->get_results("SELECT * FROM $tablecategories ORDER BY cat_name");
}
if ($categories) {
foreach ($categories as $category) {
if ($category->category_parent == $parent) {
$count = $wpdb->get_var("SELECT COUNT(post_id) FROM $tablepost2cat WHERE category_id = $category->cat_ID");
$pad = str_repeat('— ', $level);
$bgcolor = ('#eee' == $bgcolor) ? 'none' : '#eee';
echo "<tr style='background-color: $bgcolor'><th scope='row'>$category->cat_ID</th><td>$pad $category->cat_name</td>
<td>$category->category_description</td>
<td>$count</td>
<td><a href='categories.php?action=edit&cat_ID=$category->cat_ID' class='edit'>" . __('Edit') . "</a></td><td><a href='categories.php?action=Delete&cat_ID=$category->cat_ID' onclick=\"return confirm('". sprintf(__("You are about to delete the category \'%s\'. All of its posts will go to the default category.\\n \'OK\' to delete, \'Cancel\' to stop."), addslashes($category->cat_name)) . "')\" class='delete'>" . __('Delete') . "</a></td>
</tr>";
cat_rows($category->cat_ID, $level + 1);
}
}
} else {
return false;
}
}
function wp_dropdown_cats($currentcat, $currentparent = 0, $parent = 0, $level = 0, $categories = 0) {
global $wpdb, $tablecategories, $tablepost2cat, $bgcolor;
if (!$categories) {
$categories = $wpdb->get_results("SELECT * FROM $tablecategories ORDER BY cat_name");
}
if ($categories) {
foreach ($categories as $category) { if ($currentcat != $category->cat_ID && $parent == $category->category_parent) {
$count = $wpdb->get_var("SELECT COUNT(post_id) FROM $tablepost2cat WHERE category_id = $category->cat_ID");
$pad = str_repeat('– ', $level);
echo "\n\t<option value='$category->cat_ID'";
if ($currentparent == $category->cat_ID)
echo " selected='selected'";
echo ">$pad$category->cat_name</option>";
wp_dropdown_cats($currentcat, $currentparent, $category->cat_ID, $level + 1, $categories);
} }
} else {
return false;
}
}
function wp_create_thumbnail($file, $max_side, $effect = '') {
// 1 = GIF, 2 = JPEG, 3 = PNG
if(file_exists($file)) {
$type = getimagesize($file);
// if the associated function doesn't exist - then it's not
// handle. duh. i hope.
if(!function_exists('imagegif') && $type[2] == 1) {
$error = __('Filetype not supported. Thumbnail not created.');
}elseif(!function_exists('imagejpeg') && $type[2] == 2) {
$error = __('Filetype not supported. Thumbnail not created.');
}elseif(!function_exists('imagepng') && $type[2] == 3) {
$error = __('Filetype not supported. Thumbnail not created.');
} else {
// create the initial copy from the original file
if($type[2] == 1) {
$image = imagecreatefromgif($file);
} elseif($type[2] == 2) {
$image = imagecreatefromjpeg($file);
} elseif($type[2] == 3) {
$image = imagecreatefrompng($file);
}
if (function_exists('imageantialias'))
imageantialias($image, TRUE);
$image_attr = getimagesize($file);
// figure out the longest side
if($image_attr[0] > $image_attr[1]) {
$image_width = $image_attr[0];
$image_height = $image_attr[1];
$image_new_width = $max_side;
$image_ratio = $image_width/$image_new_width;
$image_new_height = $image_height/$image_ratio;
//width is > height
} else {
$image_width = $image_attr[0];
$image_height = $image_attr[1];
$image_new_height = $max_side;
$image_ratio = $image_height/$image_new_height;
$image_new_width = $image_width/$image_ratio;
//height > width
}
$thumbnail = imagecreatetruecolor($image_new_width, $image_new_height);
@imagecopyresized($thumbnail, $image, 0, 0, 0, 0, $image_new_width, $image_new_height, $image_attr[0], $image_attr[1]);
// move the thumbnail to it's final destination
$path = explode('/', $file);
$thumbpath = substr($file, 0, strrpos($file, '/')) . '/thumb-' . $path[count($path)-1];
if($type[2] == 1) {
if(!imagegif($thumbnail, $thumbpath)) {
$error = __("Thumbnail path invalid");
}
} elseif($type[2] == 2) {
if(!imagejpeg($thumbnail, $thumbpath)) {
$error = __("Thumbnail path invalid");
}
} elseif($type[2] == 3) {
if(!imagepng($thumbnail, $thumbpath)) {
$error = __("Thumbnail path invalid");
}
}
}
}
if(!empty($error))
{
return $error;
}
else
{
return 1;
}
}
// Some postmeta stuff
function has_meta($postid) {
global $wpdb, $tablepostmeta;
return $wpdb->get_results("
SELECT meta_key, meta_value, meta_id, post_id
FROM $tablepostmeta
WHERE post_id = '$postid'
ORDER BY meta_key,meta_id",ARRAY_A);
}
function list_meta($meta) {
global $post_ID;
// Exit if no meta
if (!$meta) return;
?>
<table id='meta-list' cellpadding="3">
<tr>
<th><?php _e('Key') ?></th>
<th><?php _e('Value') ?></th>
<th colspan='2'><?php _e('Action') ?></th>
</tr>
<?php
foreach ($meta as $entry) {
$style = ('class="alternate"' == $style) ? '' : 'class="alternate"';
echo "
<tr $style>
<td valign='top'><input name='meta[{$entry['meta_id']}][key]' tabindex='6' type='text' size='20' value='{$entry['meta_key']}' /></td>
<td><textarea name='meta[{$entry['meta_id']}][value]' tabindex='6' rows='2' cols='30'>{$entry['meta_value']}</textarea></td>
<td align='center' width='10%'><input name='updatemeta' type='submit' class='updatemeta' tabindex='6' value='" . __('Update') ."' /></td>
<td align='center' width='10%'><input name='deletemeta[{$entry['meta_id']}]' type='submit' class='deletemeta' tabindex='6' value='" . __('Delete') ."' /></td>
</tr>
";
}
echo "
</table>
";
}
// Get a list of previously defined keys
function get_meta_keys() {
global $wpdb, $tablepostmeta;
$keys = $wpdb->get_col("
SELECT meta_key
FROM $tablepostmeta
GROUP BY meta_key
ORDER BY meta_key");
return $keys;
}
function meta_form() {
global $wpdb, $tablepostmeta;
$keys = $wpdb->get_col("
SELECT meta_key
FROM $tablepostmeta
GROUP BY meta_key
ORDER BY meta_id DESC
LIMIT 10");
?>
<h3><?php _e('Add a new custom field to this post:') ?></h3>
<table cellspacing="3" cellpadding="3">
<tr>
<th colspan="2"><?php _e('Key') ?></th>
<th><?php _e('Value') ?></th>
</tr>
<tr valign="top">
<td align="right" width="18%">
<?php if ($keys) : ?>
<select id="metakeyselect" name="metakeyselect" tabindex="7">
<option value="#NONE#">- Select -</option>
<?php
foreach($keys as $key) {
echo "\n\t<option value='$key'>$key</option>";
}
?>
</select> or
<?php endif; ?>
</td>
<td><input type="text" id="metakeyinput" name="metakeyinput" tabindex="7" /></td>
<td><textarea id="metavalue" name="metavalue" rows="3" cols="25" tabindex="7"></textarea></td>
</tr>
</table>
<p class="submit"><input type="submit" name="updatemeta" tabindex="7" value="<?php _e('Add Custom Field »') ?>"></p>
<?php
}
function add_meta($post_ID) {
global $wpdb, $tablepostmeta;
$metakeyselect = $wpdb->escape( stripslashes( trim($_POST['metakeyselect']) ) );
$metakeyinput = $wpdb->escape( stripslashes( trim($_POST['metakeyinput']) ) );
$metavalue = $wpdb->escape( stripslashes( trim($_POST['metavalue']) ) );
if (!empty($metavalue) && ((('#NONE#' != $metakeyselect) && !empty($metakeyselect)) || !empty($metakeyinput))) {
// We have a key/value pair. If both the select and the
// input for the key have data, the input takes precedence:
if ('#NONE#' != $metakeyselect)
$metakey = $metakeyselect;
if ($metakeyinput)
$metakey = $metakeyinput; // default
$result = $wpdb->query("
INSERT INTO $tablepostmeta
(post_id,meta_key,meta_value)
VALUES ('$post_ID','$metakey','$metavalue')
");
}
} // add_meta
function delete_meta($mid) {
global $wpdb, $tablepostmeta;
$result = $wpdb->query("DELETE FROM $tablepostmeta WHERE meta_id = '$mid'");
}
function update_meta($mid, $mkey, $mvalue) {
global $wpdb, $tablepostmeta;
return $wpdb->query("UPDATE $tablepostmeta SET meta_key = '$mkey', meta_value = '$mvalue' WHERE meta_id = '$mid'");
}
function touch_time($edit = 1) {
global $month, $postdata;
// echo $postdata['Date'];
if ('draft' == $postdata->post_status) {
$checked = 'checked="checked" ';
$edit = false;
} else {
$checked = ' ';
}
echo '<p><input type="checkbox" class="checkbox" name="edit_date" value="1" id="timestamp" '.$checked.'/> <label for="timestamp">' . __('Edit timestamp') . '</label> <a href="http://wordpress.org/docs/reference/post/#edit_timestamp" title="' . __('Help on changing the timestamp') . '">?</a><br />';
$time_adj = time() + (get_settings('gmt_offset') * 3600);
$post_date = $postdata->post_date;
$jj = ($edit) ? mysql2date('d', $post_date) : gmdate('d', $time_adj);
$mm = ($edit) ? mysql2date('m', $post_date) : gmdate('m', $time_adj);
$aa = ($edit) ? mysql2date('Y', $post_date) : gmdate('Y', $time_adj);
$hh = ($edit) ? mysql2date('H', $post_date) : gmdate('H', $time_adj);
$mn = ($edit) ? mysql2date('i', $post_date) : gmdate('i', $time_adj);
$ss = ($edit) ? mysql2date('s', $post_date) : gmdate('s', $time_adj);
echo '<input type="text" name="jj" value="'.$jj.'" size="2" maxlength="2" />'."\n";
echo "<select name=\"mm\">\n";
for ($i=1; $i < 13; $i=$i+1) {
echo "\t\t\t<option value=\"$i\"";
if ($i == $mm)
echo " selected='selected'";
if ($i < 10) {
$ii = "0".$i;
} else {
$ii = "$i";
}
echo ">".$month["$ii"]."</option>\n";
} ?>
</select>
<input type="text" name="aa" value="<?php echo $aa ?>" size="4" maxlength="5" /> @
<input type="text" name="hh" value="<?php echo $hh ?>" size="2" maxlength="2" /> :
<input type="text" name="mn" value="<?php echo $mn ?>" size="2" maxlength="2" /> :
<input type="text" name="ss" value="<?php echo $ss ?>" size="2" maxlength="2" /> </p>
<?php
}
function check_admin_referer() {
$adminurl = strtolower(get_settings('siteurl')).'/wp-admin';
$referer = strtolower($_SERVER['HTTP_REFERER']);
if ( !strstr($referer, $adminurl) ) {
die('Sorry, you need to enable sending referrers, for this feature to work.');
}
}
?>
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