CODEWITHSUNDEEP
phpstringsubstring
Alex C.
Alex C.

Reputation: 4081

Isolate the string between two strings

I'm new to php and maybe this question has been asked before but i don't know what to search for specifically anyway here's the question

If I had a string like:

$adam = "this is a very long long string in here and has a lot of words";

I want to search inside this string for the first occurrence of the word "long" and the word "here", then select them with everything in between, and store it in a new string so the result should be:

$new_string = "long long string in here"

and by the way I wouldn't know the length of the string and the contents, all what I know is that it has the word long and the word here and I want them with the words in between.

Upvotes: 0

Views: 350

Answers (4)

peterm
peterm

Reputation: 92845

Simple strpos, substr, strlen will do the trick

Your code might look like this

$adam = "this is a very long long string in here and has a lot of words";
$word1="long";
$word2="here";

$first = strpos($adam, $word1);
$second = strpos($adam, $word2);

if ($first < $second) {
    $result = substr($adam, $first, $second + strlen($word2) - $first);
}

echo $result;

Here is a working example

Upvotes: 1

KaeruCT
KaeruCT

Reputation: 1645

Here's a way of doing that with regular expressions: 

$string = "this is a very long long string in here and has a lot of words";
$first = "long";
$last = "here";

$matches = array();

preg_match('%'.preg_quote($first).'.+'.preg_quote($last).'%', $string, $matches);
print $matches[0];

Upvotes: 0

Peter
Peter

Reputation: 16943

Use these functions to do it:

  • strpos() - use it to search words in your string
  • substr() - use it to "cut" your string
  • strlen() - use it to get string length

find position of 'long' and 'word', and cut your string using substr.

Upvotes: 1

Stef Geysels
Stef Geysels

Reputation: 1047

Here is your script, ready for copy-paste ;)

$begin=stripos($adam,"long");  //find the 1st position of the word "long"
$end=strripos($adam,"here")+4; //find the last position of the word "here" + 4 caraters of "here"
$length=$end-$begin;
$your_string=substr($adam,$begin,$length);

Upvotes: 0

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