2

以下のテキスト変数には、10 個の文が含まれています。

$txt = 'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum. Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a line in section 1.10.32. The standard chunk of Lorem Ipsum used since the 1500s is reproduced below for those interested. Sections 1.10.32 and 1.10.33 from "de Finibus Bonorum et Malorum" by Cicero are also reproduced in their exact original form, accompanied by English versions from the 1914 translation by H. Rackham.';

たとえば、テキストエリアに一連のテキストを入力したユーザーからの値が変数に含まれている場合、変数に含まれる段落の数をどのように知ることができますか?

また、特定の数の単語の変数を抽出するにはどうすればよいですかたとえば、最大 100 単語ですが、その 100 単語カウントが完全な文で終わらない場合、スクリプトはその 100 単語またはそこに何単語あるかを含む完全な文を提供します私が設定した100ワード数の制限に近い完全な文です。

これはphpで可能ですか？

4

2 に答える 2

0

あなたはこのようなことをすることができます。

$input = $_POST['textarea'];
$output = array();
preg_match_all("/<p>(.*)<\/p>/",$input,$output);
$paragraphs = count($output);
于 2012-11-28T10:15:55.703 に答える
0
  1. 全長を見つけて、パラグラフの事前定義された値で割ります
  2. 使用するsubstr ( string $string , int $start [, int $length ]

参照：substr関数

于 2012-11-28T10:13:04.473 に答える