CODEWITHSUNDEEP
phpstrpos
Redbox
Redbox

Reputation: 1477

PHP: how to compare either of the word exist in 2 string

my case is like this:

<?php
$var1 = "Top of British";
$var2 = "Welcome to British, the TOP country in the world";

$var1 = strtolower($var1);
$var2 = strtolower($var2);

if (strpos($var1, $var2) !== FALSE) {
echo "TRUE";
}
?>

its not working, how do i detect the TOP or British is exist on both string?

Upvotes: 1

Views: 632

Answers (4)

Elliot B.
Elliot B.

Reputation: 17661

Remove the punctuation from the strings, convert them both to lowercase, explode each string on the space character into an array of strings and then loop through each looking for any word matches:

$var1 = preg_replace('/[.,]/', '', "Top of British");
$var2 = preg_replace('/[.,]/', '', "Welcome to British, the TOP country in the world");


$words1 = explode(" ",strtolower($var1));
$words2 = explode(" ",strtolower($var2));

foreach ($words1 as $word1) {
    foreach ($words2 as $word2) {
       if ($word1 == $word2) {
          echo $word1."\n";
          break;
       }
    }
}

DEMO: http://codepad.org/YtDlcQRA

Upvotes: 2

Waleed Khan
Waleed Khan

Reputation: 11467

PHP has a function for finding elements that are a member of two arrays:

$var1 = explode(" ", strtolower("Top of British"));
$var2 = explode(" ", strtolower("Welcome to British, the TOP country in the world"));
var_dump(array_intersect($var1, $var2)); // array(1) { [0]=> string(3) "top" }

Upvotes: 0

TheHe
TheHe

Reputation: 2972

Generic example for checking the intersection of words in phrases... you may check in the result for any obsolete stop-words like "of" or "to"

<?php
$var1 = "Top of British";
$var2 = "Welcome to British, the TOP country in the world";

$words1 = explode(' ', strtolower($var1));
$words2 = explode(' ', strtolower($var2));

$iWords = array_intersect($words1, $words2);

if(in_array('british', $iWords ) && in_array('top', $iWords))
  echo "true";

Upvotes: 0

arcyqwerty
arcyqwerty

Reputation: 10685

To find TOP or BRITISH in the string

<?php
$var1 = "Top of British";
$var2 = "Welcome to British, the TOP country in the world";

$var1 = strtolower($var1);
$var2 = strtolower($var2);

if (strpos($var1, 'top') && strpos($var1, 'british')) {
echo "Either the word TOP or the word BRITISH was found in string 1";
}
?>

More generally match words in string 2 with those in string 1

<?php
$var1 = explode(' ', strtolower("Top of British"));
$var2 = "Welcome to British, the TOP country in the world";

$var2 = strtolower($var2);

foreach($var1 as $needle) if (strpos($var2, $needle)) echo "At least one word in str1 was found in str 2";

?>

Upvotes: 0

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