截断字符串，当使用更多大写字母时应该更短

Question

<echo $this->Text->truncate(strip_tags($news['Newspost']['article_' . $lang]), 200, array('ending' => ' ...', 'exact' => false, 'html' => true));>

我们目前在我们的网站上使用它来在我们的主页上创建新闻帖子的预览。当新闻帖子包含太多大写字母或宽度更大的符号 (@# ...) 时，截断功能将无法正常工作并显示额外的一行。

一个解决方案是将 truncate 缩短到足够长，但这对于普通帖子来说看起来不太好。

解决此问题的最佳方法是什么？一个页面上大约有 10-20 个这样的帖子，重要的是我们的网站上有很多并发用户 (100-500)。所以我不想添加一些会大大降低网站速度的奇怪内容。

Answer 1

<?php



    function count_capitals($s) {
        return strlen(preg_replace('![^A-Z]+!', '', $s));
    }

    function truncate_str($str, $limit=30) {
        if( $limit < 3 ) $limit = 3;
        if( strlen($str) > $limit ) return substr($str, 0, $limit - 3) . ' ...';
        return $str;
    }   

    function showTextByCapitalPercent($percent,$str) {
        $int_percent = (int)$percent;
        // 0-24% capitals
        if( in_array($int_percent,range(0,24) ) ) {
            return truncate_str($str, $limit=50)."\n";
        }

        // 25-49% capitals
        if( in_array($int_percent,range(25,49) ) ) {
            return truncate_str($str, $limit=40)."\n";
        }   

        // 50-74% capitals
        if( in_array($int_percent,range(50,74) ) ) {
            return truncate_str($str, $limit=30)."\n";
        }    

        // 75-100% capitals
        if( in_array($int_percent,range(75,100) ) ) {
            return truncate_str($str, $limit=20)."\n";
        }
        return '';
    }   


    $str1 = "Lorem ipsum dolor sit Amet, consectetur adipiscing elit. ";
    $str2 = "Fusce eu mauris libero. Morbi auctor lobortis ex, pulvinar fermentum massa. ";
    $str3 = "Cras DOLOR IPSUM, CONGUE EU ornare VITAE, egestas SED URNA. ";
    $str4 = "Nunc NEC urna MOLLIS, rutrum nisi eu, bibendum turpis.";


    $percent_capitals_str1 = (count_capitals($str1)*100)/strlen($str1);
    $percent_capitals_str2 = (count_capitals($str2)*100)/strlen($str2);
    $percent_capitals_str3 = (count_capitals($str3)*100)/strlen($str3);
    $percent_capitals_str4 = (count_capitals($str4)*100)/strlen($str4);


    echo "<pre>";

    echo "capitals str1: ".$percent_capitals_str1."%\n";
    echo "capitals str2: ".$percent_capitals_str2."%\n";
    echo "capitals str3: ".$percent_capitals_str3."%\n";
    echo "capitals str4: ".$percent_capitals_str4."%\n";

    echo "\n-------------------------\n";

    echo "str1: ".showTextByCapitalPercent($percent_capitals_str1,$str1)."\n";
    echo "str2: ".showTextByCapitalPercent($percent_capitals_str2,$str2)."\n";
    echo "str3: ".showTextByCapitalPercent($percent_capitals_str3,$str3)."\n";
    echo "str4: ".showTextByCapitalPercent($percent_capitals_str4,$str4)."\n";



/*
out
capitals str1: 3.5087719298246%
capitals str2: 2.6315789473684%
capitals str3: 51.666666666667%
capitals str4: 18.518518518519%

-------------------------
str1: Lorem ipsum dolor sit Amet, consectetur adipisc ...
str2: Fusce eu mauris libero. Morbi auctor lobortis e ...
str3: Cras DOLOR IPSUM, CONGUE EU ...
str4: Nunc NEC urna MOLLIS, rutrum nisi eu, bibendum  ...
*/

?>

从您的字符串中获取大写百分比并按百分比的大小应用截断

ex1: capitals=10% 只显示 50 个字符

ex2: capitals=21% 只显示 33 个字符....

截断字符串，当使用更多大写字母时应该更短

truncate string, should be shorter when more capitals are used

php

truncate