php - how to find text in a string from database? - php

Question

Let's say i have:
$title = "Rihanna - Man Down";
and a database multiple rows including one with a field called "name" with the "Rihanna" value
now... how can i check if in $title exists "Rihanna" and if it does how to add a link on "Rihanna" like this:
with other words check if one of the expresions from $title exists the database
i think this second formulation it is better
Rihanna - Man Down
I want to do something like youtube does at some of it;s music videos to be more clear

Answer 1

If I understood correct, this can do the work:
Then first search in DataBase, your query must be something like this:
//Search for word in DataBase on filed "name"
$title = "Rihanna - Man Down";
$arr = explode('-', $title);
$title = $arr[0];
$result = mysql_query("SELECT name FROM table WHERE name LIKE '%" . mysql_real_escape_string($title) . "%'");
//If find results, then we replace and generate links in this loop
while($row = mysql_fetch_array( $result )) {
$str = str_replace($title, ''.$title.'', $row['name']);
echo $str; //Rihanna - Man Down
}

Answer 2

$words = explode("-", $title);
$result = array();
foreach ($words as $word)
{
$word = trim($word);
$res = mysql_query("SELECT name FROM table WHERE name='" . mysql_real_escape_string($word) . "'");
if (mysql_num_rows($res) > 0)
{
$result[] = '' . $word . '';
}
else
{
$result[] = $word;
}
}
$result = implode($result, " - ");
This will however also link to "artist?id=Pink" if a song from another artist is named Pink, but you have the artist Pink in your database.

Answer 3

Split your title into words, and for each word check if your database contains row with that name. If yes, replace occurences of the word with link.
foreach (preg_split("/\s+/", $title) as $word) {
if (word_in_database($word)) {
$title = str_replace($word, "$word", $title);
}
}