我收到此 PHP 致命错误消息：“致命错误：PT_Fieldtype 类包含 1 个抽象方法，因此必须在第 148 行的 /.../pt_fieldtype.php 中声明为抽象方法或实现其余方法 (EE_Fieldtype::display_field)”
但是，当我打开文件并进行搜索时，根本找不到“抽象”一词。谢谢您的帮助！
编辑：这是有问题的代码。我之前没有展示它是我的坏事。
<?php if (! defined('BASEPATH')) exit('No direct script access allowed');
if (! defined('PT_FIELD_PACK_VER'))
{
// get the version from config.php
require PATH_THIRD.'pt_field_pack/config.php';
define('PT_FIELD_PACK_VER', $config['version']);
}
/**
* P&T Fieldtype Base Class
*
* @package P&T Field Pack
* @author Brandon Kelly <brandon@pixelandtonic.com>
* @copyright Copyright (c) 2010 Pixel & Tonic, LLC
*/
class PT_Fieldtype extends EE_Fieldtype {
/**
* PT_Fieldtype Constructor
*/
function PT_Fieldtype()
{
parent::EE_Fieldtype();
}
// --------------------------------------------------------------------
/**
* Options Setting
*/
function options_setting($options=array(), $indent = '')
{
$r = '';
foreach($options as $name => $label)
{
if ($r !== '') $r .= "\n";
// is this just a blank option?
if (! $name && ! $label) $name = $label = ' ';
$r .= $indent . htmlentities($name);
// is this an optgroup?
if (is_array($label)) $r .= "\n".$this->options_setting($label, $indent.' ');
else if ($name != $label) $r .= ' : '.$label;
}
return $r;
}
// --------------------------------------------------------------------
/**
* Save Options Setting
*/
function save_options_setting($options = '', $total_levels = 1)
{
// prepare options
$options = preg_split('/[\r\n]+/', $options);
foreach($options as &$option)
{
$option_parts = preg_split('/\s:\s/', $option, 2);
$option = array();
$option['indent'] = preg_match('/^\s+/', $option_parts[0], $matches) ? strlen(str_replace("\t", ' ', $matches[0])) : 0;
$option['name'] = trim($option_parts[0]);
$option['value'] = isset($option_parts[1]) ? trim($option_parts[1]) : $option['name'];
}
return $this->_structure_options($options, $total_levels);
}
/**
* Structure Options
*/
private function _structure_options(&$options, $total_levels, $level = 1, $indent = -1)
{
$r = array();
while ($options)
{
if ($indent == -1 || $options[0]['indent'] > $indent)
{
$option = array_shift($options);
$children = (! $total_levels OR $level < $total_levels)
? $this->_structure_options($options, $total_levels, $level+1, $option['indent']+1)
: FALSE;
$r[(string)$option['name']] = $children ? $children : (string)$option['value'];
}
else if ($options[0]['indent'] <= $indent)
{
break;
}
}
return $r;
}
// --------------------------------------------------------------------
/**
* Prep Iterators
*/
function prep_iterators(&$tagdata)
{
// find {switch} tags
$this->_switches = array();
$tagdata = preg_replace_callback('/'.LD.'switch\s*=\s*([\'\"])([^\1]+)\1'.RD.'/sU', array(&$this, '_get_switch_options'), $tagdata);
$this->_count_tag = 'count';
$this->_iterator_count = 0;
}
/**
* Get Switch Options
*/
function _get_switch_options($match)
{
global $FNS;
$marker = LD.'SWITCH['.$FNS->random('alpha', 8).']SWITCH'.RD;
$this->_switches[] = array('marker' => $marker, 'options' => explode('|', $match[2]));
return $marker;
}
/**
* Parse Iterators
*/
function parse_iterators(&$tagdata)
{
// {switch} tags
foreach($this->_switches as $i => $switch)
{
$option = $this->_iterator_count % count($switch['options']);
$tagdata = str_replace($switch['marker'], $switch['options'][$option], $tagdata);
}
// update the count
$this->_iterator_count++;
// {count} tags
$tagdata = $this->EE->TMPL->swap_var_single($this->_count_tag, $this->_iterator_count, $tagdata);
}
}
// ====================================================================
/**
* P&T Multi Fieldtype Base Class
*
* @package P&T Field Pack
* @author Brandon Kelly <brandon@pixelandtonic.com>
* @copyright Copyright (c) 2010 Pixel & Tonic, LLC
*/
class PT_Multi_Fieldtype extends PT_Fieldtype {
var $default_field_settings = array(
'options' => array(
'Option 1' => 'Option 1',
'Option 2' => 'Option 2',
'Option 3' => 'Option 3'
)
);
var $default_cell_settings = array(
'options' => array(
'Opt 1' => 'Opt 1',
'Opt 2' => 'Opt 2'
)
);
var $default_tag_params = array(
'sort' => '',
'backspace' => '0'
);
var $total_option_levels = 1;
// --------------------------------------------------------------------
/**
* Display Field Settings
*/
function display_settings($data)
{
// load the language file
$this->EE->lang->loadfile($this->class);
$options = isset($data['options']) ? $data['options'] : array();
$input_name = $this->class.'_options';
$this->EE->table->add_row(
lang($this->class.'_options', $input_name) . '<br />'
. lang('field_list_instructions') . '<br /><br />'
. lang('option_setting_examples'),
'<textarea id="'.$input_name.'" name="'.$input_name.'" rows="6">'.$this->options_setting($options).'</textarea>'
);
}
/**
* Display Cell Settings
*/
function display_cell_settings($data)
{
// load the language file
$this->EE->lang->loadfile($this->class);
$options = isset($data['options']) ? $data['options'] : array();
return array(
array(
lang($this->class.'_options'),
'<textarea class="matrix-textarea" name="options" rows="4">'.$this->options_setting($options).'</textarea>'
)
);
}
// --------------------------------------------------------------------
/**
* Save Field Settings
*/
function save_settings($data)
{
$post = $this->EE->input->post($this->class.'_options');
// replace quotes
$post = str_replace('"', '"', $post);
return array(
'options' => $this->save_options_setting($post, $this->total_option_levels)
);
}
/**
* Save Cell Settings
*/
function save_cell_settings($settings)
{
// replace quotes
$settings['options'] = str_replace('"', '"', $settings['options']);
$settings['options'] = $this->save_options_setting($settings['options'], $this->total_option_levels);
return $settings;
}
// --------------------------------------------------------------------
/**
* Prep Field Data
*
* Ensures $field_data is an array.
*/
function prep_field_data(&$data)
{
if (! is_array($data))
{
$data = array_filter(preg_split("/[\r\n]+/", $data));
}
}
// --------------------------------------------------------------------
/**
* Display Field
*/
function display_field($data)
{
if (is_string($data)) $data = html_entity_decode($data);
return $this->_display_field($data, $this->field_name);
}
/**
* Display Cell
*/
function display_cell($data)
{
return $this->_display_field($data, $this->cell_name);
}
// --------------------------------------------------------------------
/**
* Save
*/
function save($data)
{
// replace quotes
return str_replace('"', '"', $data);
}
/**
* Save Cell
*/
function save_cell($data)
{
// replace quotes
return $this->save($data);
}
// --------------------------------------------------------------------
/**
* Find Options
*/
private function _find_option($needle, $haystack)
{
foreach ($haystack as $key => $value)
{
$r = $value;
if ($needle == $key OR (is_array($value) AND (($r = $this->_find_option($needle, $value)) !== FALSE)))
{
return $r;
}
}
return FALSE;
}
// --------------------------------------------------------------------
/**
* Replace Tag
*/
function replace_tag($data, $params = array(), $tagdata = FALSE)
{
if (! isset($this->settings['options']) || ! $this->settings['options'])
{
return $data;
}
if (! $tagdata)
{
return $this->replace_ul($data, $params);
}
$this->prep_field_data($data);
$r = '';
if ($this->settings['options'] && $data)
{
// optional sorting
if (isset($params['sort']) && $params['sort'])
{
$sort = strtolower($params['sort']);
if ($sort == 'asc')
{
sort($data);
}
else if ($sort == 'desc')
{
rsort($data);
}
}
// offset and limit
if (isset($params['offset']) || isset($params['limit']))
{
$offset = isset($params['offset']) ? $params['offset'] : 0;
$limit = isset($params['limit']) ? $params['limit'] : count($data);
$data = array_splice($data, $offset, $limit);
}
// prepare for {switch} and {count} tags
$this->prep_iterators($tagdata);
foreach($data as $option_name)
{
if (($option = $this->_find_option($option_name, $this->settings['options'])) !== FALSE)
{
// copy $tagdata
$option_tagdata = $tagdata;
// simple var swaps
$option_tagdata = $this->EE->TMPL->swap_var_single('option', $option, $option_tagdata);
$option_tagdata = $this->EE->TMPL->swap_var_single('option_name', $option_name, $option_tagdata);
// parse {switch} and {count} tags
$this->parse_iterators($option_tagdata);
$r .= $option_tagdata;
}
}
if (isset($params['backspace']) && $params['backspace'])
{
$r = substr($r, 0, -$params['backspace']);
}
}
return $r;
}
// --------------------------------------------------------------------
/**
* Unordered List
*/
function replace_ul($data, $params = array())
{
return "<ul>\n"
. $this->replace_tag($data, $params, " <li>{option}</li>\n")
. '</ul>';
}
/**
* Ordered List
*/
function replace_ol($data, $params = array())
{
return "<ol>\n"
. $this->replace_tag($data, $params, " <li>{option}</li>\n")
. '</ol>';
}
// --------------------------------------------------------------------
/**
* All Options
*/
function replace_all_options($data, $params = array(), $tagdata = FALSE, $options = FALSE, $iterator_count = 0)
{
if (! $tagdata)
{
return "<ul>\n"
. $this->replace_all_options($data, $params, " <li>{option}</li>\n")
. "</ul>";
}
PT_Multi_Fieldtype::prep_field_data($data);
$r = '';
if ($options === FALSE)
{
$options = $this->settings['options'];
}
if ($options)
{
// optional sorting
if (isset($params['sort']) && $params['sort'])
{
$sort = strtolower($params['sort']);
if ($sort == 'asc')
{
asort($options);
}
else if ($sort == 'desc')
{
arsort($options);
}
}
// prepare for {switch} and {count} tags
$this->prep_iterators($tagdata);
$this->_iterator_count += $iterator_count;
foreach($options as $option_name => $option)
{
if (is_array($option))
{
$sub_params = array_merge($params, array('backspace' => '0'));
$r .= $this->replace_all_options($data, $sub_params, $tagdata, $option, $this->_iterator_count);
}
else
{
// copy $tagdata
$option_tagdata = $tagdata;
// simple var swaps
$option_tagdata = $this->EE->TMPL->swap_var_single('option', $option, $option_tagdata);
$option_tagdata = $this->EE->TMPL->swap_var_single('option_name', $option_name, $option_tagdata);
$option_tagdata = $this->EE->TMPL->swap_var_single('selected', (in_array($option_name, $data) ? 1 : 0), $option_tagdata);
// parse {switch} and {count} tags
$this->parse_iterators($option_tagdata);
$r .= $option_tagdata;
}
}
if (isset($params['backspace']) && $params['backspace'])
{
$r = substr($r, 0, -$params['backspace']);
}
}
return $r;
}
// --------------------------------------------------------------------
/**
* Is Selected?
*/
function replace_selected($data, $params = array())
{
$this->prep_field_data($data);
return (isset($params['option']) AND in_array($params['option'], $data)) ? 1 : 0;
}
/**
* Total Selections
*/
function replace_total_selections($data, $params = array())
{
$this->prep_field_data($data);
return $field_data ? (string) count($data) : '0';
}
}