RegEx with preg_match to find and replace a SIMILAR string

Question

I am using regular expressions with preg_replace() in order to find and replace a sentence in a piece of text. The $search_string contains plain text + html tags +   elements. The problem is that only sometimes the   elements convert to white space on run time, making it difficult to find and replace using str_replace(). So, I'm trying to build a pattern that is equal to the search string and will match anything like it which contains, or does not contain the   elements;

For example:

$search_string = 'Two years in,&nbsp;the company has expanded to 35 cities, five of which are outside the U.S. Plus,&nbsp;in&nbsp;April, <a href="site.com">ClassPass</a> acquired its main competitor,&nbsp;Fitmob.';

$pattern = $search_string(BUT IGNORE THE   elements in the subject)

$subject = "text text text text text". $search_string . "text text text text text";

Using A regular expression to exclude a word/string, I've tried:

     $pattern = '`^/(?!\&nbsp;)'.$search_string.'`';
     $output = preg_replace($pattern, $replacement_string,$subject);

The end result will be that if the $subject does contains a string that is like my $seach_string but without the   elements, it will still match and replace it with $replacement_string

EDIT:

The actual values:

$subject = file_get_contents("http://venturebeat.com/2015/11/10/sources-classpass-raises-30-million-from-google-ventures-and-others/");

 $search_string = "Two years in,&nbsp;the company has expanded to 35 cities, five of which are outside the U.S. Plus,&nbsp;in&nbsp;April, ClassPass acquired its main competitor,&nbsp;Fitmob."; 

$replacement_string = "<span class='smth'>Two years in,&nbsp;the company has expanded to 35 cities, five of which are outside the U.S. Plus,&nbsp;in&nbsp;April, ClassPass acquired its main competitor,&nbsp;Fitmob.</span>";

I've tried that and it doesn't work. May be I'm wrong - the str_replace() fails not because of but something else. It's worth mentioning that the $subject is actually a whole web page. Any other suggestions? It seems I need a regex pattern that will match any string in the subject which has, say 90% similarity to the $search_string ? — user3857924
– user3857924, Commented Nov 12, 2015 at 12:55
Please, could you give the link to the source page and the real search and replacement strings? — Casimir et Hippolyte
– Casimir et Hippolyte, Commented Nov 12, 2015 at 12:58
$subject = file_get_contents("venturebeat.com/2015/11/10/…); $search_string = "Two years in, the company has expanded to 35 cities, five of which are outside the U.S. Plus, in April, ClassPass acquired its main competitor, Fitmob."; $replacement_string = "<span class="smth">Two years in, the company has expanded to 35 cities, five of which are outside the U.S. Plus, in April, ClassPass acquired its main competitor, Fitmob.</span>"; — user3857924
– user3857924, Commented Nov 12, 2015 at 13:07
Would it make anything easier to first do a $subject = str_replace( ' ', ' ', $subject ); and the do the search when it only contains ordinary spaces? — Hasse Björk
– Hasse Björk, Commented Nov 12, 2015 at 22:46

ezio4df · Accepted Answer · 2020-01-15 07:08:02Z

0

Not a very efficient way of doing it but it should workout for you,

preg_replace('Two.*?years.*?in.*?the.*?company.*?has.*?expanded.*?to.*?35.*?cities.*?five.*?of.*?which.*?are.*?outside.*?the.*?U\.S\..*?Plus.*?in.*?April.*?ClassPass.*?acquired.*?its.*?main.*?competitor.*?Fitmob\.', '<span class=\'smth\'>$0</span>', $subject);

answered Jan 15, 2020 at 7:08

ezio4df

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