你好朋友有点问题。我只需要提取文本“任何人”的文字。
我尝试使用strtok(),strstr()检索单词。一些正则表达式,但只能设法提取一些单词。
由于单词附带的字符和符号数量,问题很复杂。
必须提取单词的示例文本。这是一个示例文本:
Main article: our 46,000 required, !but (1947-2011) mail@server.com March 8, 2014 Gutenberg's 34-DE 'a' 3,1415 Us: @unknown n go http://google.com or www.google.com and http://www.google.com (r) The 509th "composite" and; C-54 #dog v4.0 ¿as is done? ¿article... agriculture? x ¿cat? now! Hi!! (87 meters).
Sample text, for testing.
提取文本的结果应为:
Main article our required but March Gutenberg's a go or and The composite and dog as is done article agriculture cat now Hi meters
Sample text for testing
我为编写工作而编写的第一个函数
function PreText($text){
$text = str_replace("\n", ".", $text);
$text = str_replace("\r", ".", $text);
$text = str_replace("'", "", $text);
$text = str_replace("?", "", $text);
$text = str_replace("¿", "", $text);
$text = str_replace("(", "", $text);
$text = str_replace(")", "", $text);
$text = str_replace('"', "", $text);
$text = str_replace(';', "", $text);
$text = str_replace('!', "", $text);
$text = str_replace('<', "", $text);
$text = str_replace('>', "", $text);
$text = str_replace('#', "", $text);
$text = str_replace(",", "", $text);
$text = str_replace(".c", "", $text);
$text = str_replace(".C", "", $text);
return $text;
}
分割功能:
function SplitWords($text){
$words = explode(" ", $text);
$ContWords = count($words);
for ($i = 0; $i < $ContWords; $i++){
if (ctype_alpha($words[$i])) {
$NewText .= $words[$i].", ";
}
}
return $NewText;
}
该计划:
<?
include_once ('functions.php');
$text = "Main article: our 46,000 ...";
$text = PreText($text);
$text = SplitWords($text);
echo $text;
?>
这是代码还有很长的路要走。感谢您的帮助。
答案 0 :(得分:5)
如果我理解正确,您想删除字符串中的所有非字母。我会使用preg_replace
$text = "Main article: our 46,000...";
$text = preg_replace("/[^a-zA-Z' ]/","",$text);
这应该删除所有不是字母,撇号或空格的内容。
答案 1 :(得分:0)
尝试这几乎是你的要求
<?php
$text = <<<HEREDOC
Main article: our 46,000 required, !but (1947-2011) mail@server.com March 8, 2014 Gutenberg's 34-DE 'a' 3,1415 Us: @unknown n go http://google.com or www.google.com and
http://www.google.com (r) The 509th composite" and; C-54 #dog v4.0 ¿as is done? ¿article... agriculture? x ¿cat? now! Hi!! (87 meters). Sample text, for testing.
HEREDOC;
//replace all kind of URLs and emails from text
$url_email = "((https?|ftp)\:\/\/)?"; // SCHEME
$url_email .= "([a-z0-9+!*(),;?&=\$_.-]+(\:[a-z0-9+!*(),;?&=\$_.-]+)?@)?"; // User and Pass
$url_email .= "([a-z0-9-.]*)\.([a-z]{2,4})"; // Host or IP
$url_email .= "(\:[0-9]{2,5})?"; // Port
$url_email .= "(\/([a-z0-9+\$_-]\.?)+)*\/?"; // Path
$url_email .= "(\?[a-z+&\$_.-][a-z0-9;:@&%=+\/\$_.-]*)?"; // GET Query
$url_email .= "(#[a-z_.-][a-z0-9+\$_.-]*)?"; // Anchor
$text = preg_replace("/$url_email/","",$text);
//replace anything like Us: @unknown
$text = preg_replace("/Us:.?@\\w+/","",$text);
//replace all Non-Alpha characters
$text = preg_replace("/[^a-zA-Z' ]/","",$text);
echo $text;
?>