php Wordpress 标题：如果超过 50 个字符，则显示省略号
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Wordpress Titles: If Longer Than 50 Characters, Show Ellipsis
提问by Zach Smith
I have a wordpress site with titles, and if the title has more than 50 characters I need to add an ellipsis (...) at the end of the title and stop the title at 50 characters. Below is the PHP I am writing but it seems to not work correctly, seeking a PHP guru to teach me the correct way for this. Any help would be greatly appreciated.
我有一个带有标题的 wordpress 网站，如果标题超过 50 个字符，我需要在标题末尾添加一个省略号 (...) 并将标题停止在 50 个字符处。下面是我正在编写的 PHP，但它似乎无法正常工作，寻求 PHP 大师教我正确的方法。任何帮助将不胜感激。
<?php if (strlen("the_title()") > 50) { ?>
<?php the_title(); ?>
<?php } if (strlen("the_title()") < 50) { ?>
<?php echo substr(get_the_title(), 0, 50); ?>...
<?php } ?>
回答by Saul
The mb_strimwidthfunction does exactly that.
该mb_strimwidth功能正是这么做的。
echo mb_strimwidth(get_the_title(), 0, 50, '...');
回答by Aamer Shahzad
WordPress has built in function "wp_trim_words()"to trim the sentences based on the number of words you provide,
WordPress 内置"wp_trim_words()"了根据您提供的单词数量修剪句子的功能，
https://codex.wordpress.org/Function_Reference/wp_trim_words
https://codex.wordpress.org/Function_Reference/wp_trim_words
to trim the title larger than 5 words you can do this
要修剪大于 5 个单词的标题，您可以这样做
<?php
$title = get_the_title();
$short_title = wp_trim_words( $title, 5, '...' );
echo '<h3>'.$short_title.'</h3>';
?>
回答by Subroto Biswas
Single Code, 100% working
单一代码，100% 工作
PHP Function mb_strimwidth() | Wordpress Function get_the_title()
PHP 函数 mb_strimwidth() | Wordpress 函数 get_the_title()
<?php
echo mb_strimwidth( get_the_title(), 0, 100, '...' );
?>
回答by Ali
Add this to your "functions.php" file in your theme folder....
将此添加到主题文件夹中的“functions.php”文件中....
function the_title_excerpt($before = '', $after = '', $echo = true, $length = false)
{
$title = get_the_title();
if ( $length && is_numeric($length) ) {
$title = substr( $title, 0, $length );
}
if ( strlen($title)> 0 ) {
$title = apply_filters('the_title_excerpt', $before . $title . $after, $before, $after);
if ( $echo )
echo $title;
else
return $title;
}
}
then call the title like as follows
然后像下面这样调用标题
<?php the_title_excerpt('', '...', true, '50'); ?>
回答by Johan Wallberg
<?php
$title = the_title('','',false);
if(strlen($title) > 60):
echo trim(substr($title, 0, 65)).'...';
else:
echo $title;
endif;
?>
回答by NickAldwin
You're checking the length of the string "the_title()". Remove the quotes, and it will probably work (I'm not 100% sure of the difference between the_title() and get_the_title(), as I haven't used Wordpress in a while -- you might have to switch that around too):
您正在检查 string 的长度"the_title()"。删除引号，它可能会起作用（我不是 100% 确定 the_title() 和 get_the_title() 之间的区别，因为我有一段时间没有使用过 Wordpress——你可能也需要切换它） ：
<?php if (strlen(the_title()) > 50) { ?>
<?php the_title(); ?>
<?php } if (strlen(the_title()) < 50) { ?>
<?php echo substr(get_the_title(), 0, 50); ?>...
<?php } ?>
or maybe
或者可能
<?php if (strlen(get_the_title()) > 50) { ?>
<?php the_title(); ?>
<?php } if (strlen(get_the_title()) < 50) { ?>
<?php echo substr(get_the_title(), 0, 50); ?>...
<?php } ?>
回答by Aaron Hathaway
Take the_title()out of quotes when using the strlen()function.
以the_title()使用时的报价出来strlen()的功能。
回答by Brad
echo (strlen(the_title())>50) ? (substr(the_title(), 0, 50) . "...") : the_title());
This is a ternary operator. What it basically says is if the result from the_title()is more than 50 characters, then echo the first 50 characters and then the string .... Otherwise, just echo the result from the_title().
这是一个三元运算符。它基本上说的是，如果结果 fromthe_title()超过 50 个字符，则回显前 50 个字符，然后回显 string ...。否则，只需回显来自the_title().
You can read more about substrhere: http://php.net/manual/en/function.substr.php
您可以substr在此处阅读更多信息：http: //php.net/manual/en/function.substr.php
You can find info on the ternary operator here: http://php.net/manual/en/language.operators.comparison.php
您可以在此处找到有关三元运算符的信息：http: //php.net/manual/en/language.operators.comparison.php
