Cannot remove extra whitespace in a string retrieved from internet in php - php

I am trying to remove extra whitespace of a string I get from internet using file_get_contents(). I tried str_replace() andpreg_replace(), and also search but none of them worked.
Here is my code:
<?php $html_content = file_get_contents("http://mindcity.sina.com.hk/MC-lunar/daily/2014/12/20141209_b5.html");
$html_content = mb_convert_encoding($html_content, 'UTF-8', 'BIG-5');
$html_content = strip_tags($html_content);
$start_pos = strrpos($html_content, "宜 :");
$end_pos = strrpos($html_content, "凶神宜忌 :") - strlen($html_content);
$good_to_do = substr($html_content, $start_pos, $end_pos);
echo $good_to_do .'<br>';
//remove whitespace of $good_to_do
$good_to_do = str_replace(' : ','*',$good_to_do);
$good_to_do = preg_replace('/^[\pZ\pC]+|[\pZ\pC]+$/u', '', $good_to_do);
$good_to_do = str_replace(array("\r\n", "\r", "\n", "\t", "\0", "\s", "\x0B", "\x20", "\xA0"), '*', $good_to_do);
var_dump( $good_to_do ); ?>

Do
$good_to_do = preg_replace('/\s+/', '*', $good_to_do);
I put '*' because that is what you want to replace it with? You can put anything you like there.

Just found that the white space was when view source.
So the code just simply becomes str_replace(' ', '', $html_content);

Related

php </br> and \n tag is not removing

I have a problem with </br> and \n. I tested the following code and the \n is not removing in text. I is every-time looks like this:
fads\n asf \nasf \nasf \nasf \nas f\nas f\nasf \nasf \nasf s\naf
What i am doing wrong and how can i remove the </br> and \n with php?
$reply=$data['reply'];
$reply = str_replace(array('<br/>', '&', '"'), ' ', $reply);
$reply = trim(preg_replace('/\s\s+/', ' ', $reply));
$reply = str_replace("\n", '', $reply);
would it be .= ? otherwise you keep introducing (overwriting) a new $reply variable
$reply=$data['reply'];
$reply .= str_replace(array('<br/>', '&', '"'), ' ', $reply);
$reply .= trim(preg_replace('/\s\s+/', ' ', $reply));
$reply .= str_replace("\n", '', $reply);
This has been answered here: Remove new lines from string
Basically the middle operation does not take new lines between words into consideration.
This is the answer found there which has worked for me.
$reply = $data['reply'];
$reply = str_replace(array('<br/>', '&', '"'), ' ', $reply);
$reply = trim(preg_replace('/\s+/', ' ', $reply));

Replacing characters in MIME encoded emails

I am looking for a way to simply replace characters with their ASCII counterparts in MIME encoded emails. I've written preliminary code below, but it seems like the str_replace commands I'm using will keep on going forever to catch all possible combinations. Is there a more efficient way to do this?
<?php
$strings = "=?utf-8?Q?UK=20Defence=20=2D=20Yes=2C=20Both=20Labour=20and=20Tory=20Need=20To=20Be=20Very=20Much=20Clearer=20On=20Defence?=";
function decodeString($input){
$space = array("=?utf-8?Q?","=?UTF-8?Q?", "=20","?=");
$hyphen = array("=E2=80=93","=2D");
$dotdotdot = "=E2=80=A6";
$pound = "=C2=A3";
$comma = "=2C";
$decode = str_replace($space, ' ', $input);
$decode = str_replace($hyphen, '-', $decode);
$decode = str_replace($pound, '£', $decode);
$decode = str_replace($comma, ',', $decode);
$decode = str_replace($dotdotdot, '...', $decode);
return $decode;
}
echo decodeString($strings);
?>
I figured it out - I have to pass $strings to the mb_decode_mimeheader() function.

Extracting words from a text using php

Hello friends have a little problem. I need to extract only the words of a text "anyone".
I tried to retrieve the words using strtok (), strstr (). some regular expressions, but only managed to extract some words.
The problem is complex due to the number of characters and symbols that can accompany the words.
The example text which must be extracted words. This is a sample text:
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.
The result of extracting the text should be:
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
The first function I wrote to facilitate the work
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 $text;
}
Split function:
function SplitWords($text){
$words = explode(" ", $text);
$ContWords = count($words);
for ($i = 0; $i < $ContWords; $i++){
if (ctype_alpha($words[$i])) {
$NewText .= $words[$i].", ";
}
}
return $NewText;
}
The program:
<?
include_once ('functions.php');
$text = "Main article: our 46,000 ...";
$text = PreText($text);
$text = SplitWords($text);
echo $text;
?>
Is that the code has a long way. We appreciate your help.
If I understand you correctly, you want to remove all non-letters from the string. I would use preg_replace
$text = "Main article: our 46,000...";
$text = preg_replace("/[^a-zA-Z' ]/","",$text);
This should remove everything that is not a letter, apostrophe or a space.
Try this almost your requirement
<?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;
?>

PHP remove newline in string for both Linux and Windows

Currently I have to call
$html = str_replace($search="\r\n", $replace='', $subject=$html);
$html = str_replace($search="\n", $replace='', $subject=$html);
to remove new line character in string $html. Is there a better/shorter way?
Try:
$html = str_replace(array("\r", "\n"), '', $html);
Yes, you can do that at once by using an array:
$search = array("\r\n", "\n");
$result = str_replace($search, $replace='', $subject=$html);
See str_replaceDocs.

preg_replace '</p>' with '<br />'?

I have my code removing the <p> starting tags, but now I want to replace the ending </p> tags with line breaks. How can I do this?
This is what I have:
$content = 'This is the content';
$newcontent = preg_replace("/<p[^>]*?>", "", $content);
$newcontent = preg_replace("</p>", "<br />", $newcontent);
use str_replace instead of preg_replace, so:
$content = '<p>This is a new content for missing slash</p>';
$newcontent = preg_replace("/<p[^>]*?>/", "", $content);
$newcontent = str_replace("</p>", "<br />", $newcontent);
$content = preg_replace('#<p(.*?)>(.*?)</p>#is', '$2<br/>', $content);

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