wptexturize ( $text, $reset = false )
wptexturize: 这个函数用于将文本中的某些字符和符号转换成HTML实体。例如,它可以将单引号和双引号转换为与之对应的HTML,即‘和’: 这个函数用于在WordPress博客文章中以适合网络的方式显示文本。
用格式化的实体替换常见的纯文本字符。
返回给定文本,并将引号转换为智能引号、撇号、破折号、省略号、商标符号和乘法符号。
作为一个例子。
’cause today’s effort makes it worth tomorrow’s”holiday” …
变成了:
’cause today’s effort makes it worth tomorrow’s “holiday” …
某些HTML块内的代码被跳过。
不要在{@see ‘init’}动作钩子之前使用这个函数,一切都会中断。
function wptexturize( $text, $reset = false ) { global $wp_cockneyreplace, $shortcode_tags; static $static_characters = null, $static_replacements = null, $dynamic_characters = null, $dynamic_replacements = null, $default_no_texturize_tags = null, $default_no_texturize_shortcodes = null, $run_texturize = true, $apos = null, $prime = null, $double_prime = null, $opening_quote = null, $closing_quote = null, $opening_single_quote = null, $closing_single_quote = null, $open_q_flag = '<!--oq-->', $open_sq_flag = '<!--osq-->', $apos_flag = '<!--apos-->'; // If there's nothing to do, just stop. if ( empty( $text ) || false === $run_texturize ) { return $text; } // Set up static variables. Run once only. if ( $reset || ! isset( $static_characters ) ) { /** * Filters whether to skip running wptexturize(). * * Returning false from the filter will effectively short-circuit wptexturize() * and return the original text passed to the function instead. * * The filter runs only once, the first time wptexturize() is called. * * @since 4.0.0 * * @see wptexturize() * * @param bool $run_texturize Whether to short-circuit wptexturize(). */ $run_texturize = apply_filters( 'run_wptexturize', $run_texturize ); if ( false === $run_texturize ) { return $text; } /* translators: Opening curly double quote. */ $opening_quote = _x( '“', 'opening curly double quote' ); /* translators: Closing curly double quote. */ $closing_quote = _x( '”', 'closing curly double quote' ); /* translators: Apostrophe, for example in 'cause or can't. */ $apos = _x( '’', 'apostrophe' ); /* translators: Prime, for example in 9' (nine feet). */ $prime = _x( '′', 'prime' ); /* translators: Double prime, for example in 9" (nine inches). */ $double_prime = _x( '″', 'double prime' ); /* translators: Opening curly single quote. */ $opening_single_quote = _x( '‘', 'opening curly single quote' ); /* translators: Closing curly single quote. */ $closing_single_quote = _x( '’', 'closing curly single quote' ); /* translators: En dash. */ $en_dash = _x( '–', 'en dash' ); /* translators: Em dash. */ $em_dash = _x( '—', 'em dash' ); $default_no_texturize_tags = array( 'pre', 'code', 'kbd', 'style', 'script', 'tt' ); $default_no_texturize_shortcodes = array( 'code' ); // If a plugin has provided an autocorrect array, use it. if ( isset( $wp_cockneyreplace ) ) { $cockney = array_keys( $wp_cockneyreplace ); $cockneyreplace = array_values( $wp_cockneyreplace ); } else { /* * translators: This is a comma-separated list of words that defy the syntax of quotations in normal use, * for example... 'We do not have enough words yet'... is a typical quoted phrase. But when we write * lines of code 'til we have enough of 'em, then we need to insert apostrophes instead of quotes. */ $cockney = explode( ',', _x( "'tain't,'twere,'twas,'tis,'twill,'til,'bout,'nuff,'round,'cause,'em", 'Comma-separated list of words to texturize in your language' ) ); $cockneyreplace = explode( ',', _x( '’tain’t,’twere,’twas,’tis,’twill,’til,’bout,’nuff,’round,’cause,’em', 'Comma-separated list of replacement words in your language' ) ); } $static_characters = array_merge( array( '...', '``', '''', ' (tm)' ), $cockney ); $static_replacements = array_merge( array( '…', $opening_quote, $closing_quote, ' ™' ), $cockneyreplace ); // Pattern-based replacements of characters. // Sort the remaining patterns into several arrays for performance tuning. $dynamic_characters = array( 'apos' => array(), 'quote' => array(), 'dash' => array(), ); $dynamic_replacements = array( 'apos' => array(), 'quote' => array(), 'dash' => array(), ); $dynamic = array(); $spaces = wp_spaces_regexp(); // '99' and '99" are ambiguous among other patterns; assume it's an abbreviated year at the end of a quotation. if ( "'" !== $apos || "'" !== $closing_single_quote ) { $dynamic[ '/'(dd)'(?=Z|[.,:;!?)}-]]|>|' . $spaces . ')/' ] = $apos_flag . '$1' . $closing_single_quote; } if ( "'" !== $apos || '"' !== $closing_quote ) { $dynamic[ '/'(dd)"(?=Z|[.,:;!?)}-]]|>|' . $spaces . ')/' ] = $apos_flag . '$1' . $closing_quote; } // '99 '99s '99's (apostrophe) But never '9 or '99% or '999 or '99.0. if ( "'" !== $apos ) { $dynamic['/'(?=dd(?:Z|(?![%d]|[.,]d)))/'] = $apos_flag; } // Quoted numbers like '0.42'. if ( "'" !== $opening_single_quote && "'" !== $closing_single_quote ) { $dynamic[ '/(?<=A|' . $spaces . ')'(d[.,d]*)'/' ] = $open_sq_flag . '$1' . $closing_single_quote; } // Single quote at start, or preceded by (, {, <, [, ", -, or spaces. if ( "'" !== $opening_single_quote ) { $dynamic[ '/(?<=A|[([{"-]|<|' . $spaces . ')'/' ] = $open_sq_flag; } // Apostrophe in a word. No spaces, double apostrophes, or other punctuation. if ( "'" !== $apos ) { $dynamic[ '/(?<!' . $spaces . ')'(?!Z|[.,:;!?"'(){}[]-]|&[lg]t;|' . $spaces . ')/' ] = $apos_flag; } $dynamic_characters['apos'] = array_keys( $dynamic ); $dynamic_replacements['apos'] = array_values( $dynamic ); $dynamic = array(); // Quoted numbers like "42". if ( '"' !== $opening_quote && '"' !== $closing_quote ) { $dynamic[ '/(?<=A|' . $spaces . ')"(d[.,d]*)"/' ] = $open_q_flag . '$1' . $closing_quote; } // Double quote at start, or preceded by (, {, <, [, -, or spaces, and not followed by spaces. if ( '"' !== $opening_quote ) { $dynamic[ '/(?<=A|[([{-]|<|' . $spaces . ')"(?!' . $spaces . ')/' ] = $open_q_flag; } $dynamic_characters['quote'] = array_keys( $dynamic ); $dynamic_replacements['quote'] = array_values( $dynamic ); $dynamic = array(); // Dashes and spaces. $dynamic['/---/'] = $em_dash; $dynamic[ '/(?<=^|' . $spaces . ')--(?=$|' . $spaces . ')/' ] = $em_dash; $dynamic['/(?<!xn)--/'] = $en_dash; $dynamic[ '/(?<=^|' . $spaces . ')-(?=$|' . $spaces . ')/' ] = $en_dash; $dynamic_characters['dash'] = array_keys( $dynamic ); $dynamic_replacements['dash'] = array_values( $dynamic ); } // Must do this every time in case plugins use these filters in a context sensitive manner. /** * Filters the list of HTML elements not to texturize. * * @since 2.8.0 * * @param string[] $default_no_texturize_tags An array of HTML element names. */ $no_texturize_tags = apply_filters( 'no_texturize_tags', $default_no_texturize_tags ); /** * Filters the list of shortcodes not to texturize. * * @since 2.8.0 * * @param string[] $default_no_texturize_shortcodes An array of shortcode names. */ $no_texturize_shortcodes = apply_filters( 'no_texturize_shortcodes', $default_no_texturize_shortcodes ); $no_texturize_tags_stack = array(); $no_texturize_shortcodes_stack = array(); // Look for shortcodes and HTML elements. preg_match_all( '@[/?([^<>&/[]x00-x20=]++)@', $text, $matches ); $tagnames = array_intersect( array_keys( $shortcode_tags ), $matches[1] ); $found_shortcodes = ! empty( $tagnames ); $shortcode_regex = $found_shortcodes ? _get_wptexturize_shortcode_regex( $tagnames ) : ''; $regex = _get_wptexturize_split_regex( $shortcode_regex ); $textarr = preg_split( $regex, $text, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY ); foreach ( $textarr as &$curl ) { // Only call _wptexturize_pushpop_element if $curl is a delimiter. $first = $curl[0]; if ( '<' === $first ) { if ( '<!--' === substr( $curl, 0, 4 ) ) { // This is an HTML comment delimiter. continue; } else { // This is an HTML element delimiter. // Replace each & with & unless it already looks like an entity. $curl = preg_replace( '/&(?!#(?:d+|x[a-f0-9]+);|[a-z1-4]{1,8};)/i', '&', $curl ); _wptexturize_pushpop_element( $curl, $no_texturize_tags_stack, $no_texturize_tags ); } } elseif ( '' === trim( $curl ) ) { // This is a newline between delimiters. Performance improves when we check this. continue; } elseif ( '[' === $first && $found_shortcodes && 1 === preg_match( '/^' . $shortcode_regex . '$/', $curl ) ) { // This is a shortcode delimiter. if ( '[[' !== substr( $curl, 0, 2 ) && ']]' !== substr( $curl, -2 ) ) { // Looks like a normal shortcode. _wptexturize_pushpop_element( $curl, $no_texturize_shortcodes_stack, $no_texturize_shortcodes ); } else { // Looks like an escaped shortcode. continue; } } elseif ( empty( $no_texturize_shortcodes_stack ) && empty( $no_texturize_tags_stack ) ) { // This is neither a delimiter, nor is this content inside of no_texturize pairs. Do texturize. $curl = str_replace( $static_characters, $static_replacements, $curl ); if ( false !== strpos( $curl, "'" ) ) { $curl = preg_replace( $dynamic_characters['apos'], $dynamic_replacements['apos'], $curl ); $curl = wptexturize_primes( $curl, "'", $prime, $open_sq_flag, $closing_single_quote ); $curl = str_replace( $apos_flag, $apos, $curl ); $curl = str_replace( $open_sq_flag, $opening_single_quote, $curl ); } if ( false !== strpos( $curl, '"' ) ) { $curl = preg_replace( $dynamic_characters['quote'], $dynamic_replacements['quote'], $curl ); $curl = wptexturize_primes( $curl, '"', $double_prime, $open_q_flag, $closing_quote ); $curl = str_replace( $open_q_flag, $opening_quote, $curl ); } if ( false !== strpos( $curl, '-' ) ) { $curl = preg_replace( $dynamic_characters['dash'], $dynamic_replacements['dash'], $curl ); } // 9x9 (times), but never 0x9999. if ( 1 === preg_match( '/(?<=d)xd/', $curl ) ) { // Searching for a digit is 10 times more expensive than for the x, so we avoid doing this one! $curl = preg_replace( '/b(d(?(?<=0)[d.,]+|[d.,]*))x(d[d.,]*)b/', '$1×$2', $curl ); } // Replace each & with & unless it already looks like an entity. $curl = preg_replace( '/&(?!#(?:d+|x[a-f0-9]+);|[a-z1-4]{1,8};)/i', '&', $curl ); } } return implode( '', $textarr ); }
要使用` get_users
`函数获取所有用户列表,可以按照以下步骤进行:
1. 使用` get_users
`函数调用获取用户列表:
$users = get_users();
2. 您可以按需使用参数来过滤结果。例如,您可以通过角色、用户ID、用户登录名等过滤用户列表。以下是一个根据用户角色为过滤条件的示例:
$users = get_users( array( 'role' => 'subscriber' // 将角色名称替换为您要过滤的角色 ) );
在上述示例中,将` role
`参数设置为所需的角色名称来过滤用户列表。
3. 您可以使用循环遍历获取的用户列表,并访问每个用户的属性。例如,以下示例将显示每个用户的用户名和电子邮件地址:
foreach( $users as $user ) { echo '用户名:' . $user->user_login . ', 电子邮件:' . $user->user_email . ; }
在上述示例中,通过` $user->user_login
`和` $user->user_email
`访问每个用户的用户名和电子邮件地址。
请注意,` get_users
`函数默认返回所有用户,并可以根据需要使用更多参数进行过滤。您可以参阅WordPress官方文档中的` get_users
`函数文档,了解更多可用参数和用法示例。
总结起来,使用` get_users
`函数获取所有用户列表的步骤是:
get_users
`函数获取用户列表。在WordPress中,可以使用WP_PLUGIN_DIR和WP_PLUGIN_URL常量来定义插件的目录路径和URL。
1. `WP_PLUGIN_DIR`:这是一个常量,用于定义插件的目录路径(文件系统路径)。您可以使用以下代码在插件文件中访问该常量:
$plugin_dir = WP_PLUGIN_DIR . '/your-plugin-folder/';
在上述代码中,将"your-plugin-folder"替换为您插件的实际文件夹名称。使用该常量,您可以获取插件文件的完整路径。
2. `WP_PLUGIN_URL`:这是一个常量,用于定义插件的URL(用于在网页上访问插件文件)。以下是一个使用该常量的示例:
$plugin_url = WP_PLUGIN_URL . '/your-plugin-folder/';
同样,请将"your-plugin-folder"替换为您插件的实际文件夹名称。使用该常量,您可以获取插件在网页上的完整URL。
请注意,`WP_PLUGIN_DIR`和`WP_PLUGIN_URL`常量在WordPress版本2.6之后引入。从WordPress 5.5版本开始,这两个常量被标记为过时(deprecated),因为WordPress更倾向于使用新的插件文件结构。如果您正在开发新插件,建议使用新的插件文件结构和相关函数。
在新的插件文件结构中,可以使用以下函数来获取插件的目录路径和URL:
- `plugin_dir_path()`:获取插件目录路径。
- `plugin_dir_url()`:获取插件URL。
这些函数会自动将插件的版本、多站点和SSL等考虑因素纳入计算。
总结起来,使用`WP_PLUGIN_DIR`和`WP_PLUGIN_URL`常量定义插件的目录和URL的方法是:
$plugin_dir = WP_PLUGIN_DIR . '/your-plugin-folder/'; $plugin_url = WP_PLUGIN_URL . '/your-plugin-folder/';
但请注意,这两个常量已被标记为过时,建议使用新的插件文件结构和相关函数来获取插件的路径和URL。
使用PHP在WordPress中添加自定义功能可以通过以下方式实现:
下面是一个实操示例。
要在WordPress中添加自定义功能,可以按照以下步骤使用PHP编写并添加自定义功能:
// 添加自定义功能示例 // 1. 创建自定义短代码 function custom_shortcode() { return '这是我的自定义短代码内容'; } add_shortcode('custom', 'custom_shortcode'); // 2. 自定义小工具 function custom_widget() { echo '这是我的自定义小工具内容'; } register_widget('custom_widget'); // 3. 自定义菜单 function custom_menu() { register_nav_menu('custom-menu', '自定义菜单'); } add_action('after_setup_theme', 'custom_menu'); // 4. 自定义页面模板 function custom_page_template() { /* Template Name: 自定义模板 */ // 自定义模板的内容和样式 }
请注意,修改主题文件可以在主题更新时丢失,因此建议在进行任何更改之前备份functions.php文件。此外,为避免不必要的错误和冲突,建议在添加自定义功能前先了解WordPress开发文档和最佳实践,以确保正确、安全地实现所需的自定义功能。
使用 do_action
函数可以触发一个钩子函数。do_action
函数的参数与要触发的钩子函数的参数相同。
例如,触发save_post钩子函数的代码如下:
do_action( 'save_post', $post_ID, $post );
这里,$post_ID
和 $post
是传递给钩子函数的参数。
使用 wp_get_current_user
获取当前登录用户的信息:
$current_user = wp_get_current_user(); // 获取当前用户的ID $user_id = $current_user->ID; // 获取当前用户的用户名 $user_login = $current_user->user_login; // 获取当前用户的邮箱 $user_email = $current_user->user_email; // 获取当前用户的显示名称 $display_name = $current_user->display_name;