Replacing keywords with similar content
Question by Samson
With a list of keywords like in the array below:
$keywordlist = array(
'Apple iPhone' => 'http://www.example.com/apple/iphone/',
'Apple iPad' => 'http://www.example.com/apple/ipad',
'Samsung Galaxy Ace' => 'http://www.example.com/samsung/galaxy-ace',
'Samsung Galaxy Nexus' => 'http://www.example.com/samsung/galaxy-nexus',
'Samsung' => 'http://www.example.com/samsung/',
'Apple' => 'http://www.example.com/apple/'
);
I want to replace the keywords with the URLs associated with them.
I’ve tried looping through them and use str_replace and preg_replace, but this is replacing the manufacturers name in all keywords, so all the keywords get turned into links for just ‘Samsung’ and ‘Apple’. I’m a bit stumped as to where to head next, anyone got any pointers?
Edit:
I used the below code to loop through –
foreach($keywordlist as $name => $link){
$content = str_replace($name, '<a href="'.$link.'">'.$name.'</a>', $content);
}
Solution:
I believe the problem was the link text I was replacing. It was then being replaced again by the other phrases with similar keywords, I’ve got the below to work.
Anyone think of a better way of doing this?
$content = "<p>This Apple iPhone is from Apple</p>
<p>This Apple iPad is from Apple</p>
<p>This Samsung Galaxy Ace is from Samsung</p>
<p>This Samsung Galaxy Nexus is from Samsung</p>
<p>This is a Samsung</p>
<p>This is an Apple</p>";
$keywordlist = array(
'Apple iPhone' => '[1]',
'Apple iPad' => '[2]',
'Samsung Galaxy Ace' => '[3]',
'Samsung Galaxy Nexus' => '[4]',
'Samsung' => '[5]',
'Apple' => '[6]'
);
$content = str_replace(array_keys($keywordlist), array_values($keywordlist), $content);
$urllist = array(
'[1]' => '<a href="http://www.example.com/apple/iphone/">Apple iPhone</a>',
'[2]' => '<a href="http://www.example.com/apple/ipad">Apple iPad</a>',
'[3]' => '<a href="http://www.example.com/samsung/galaxy-ace">Samsung Galaxy Ace</a>',
'[4]' => '<a href="http://www.example.com/samsung/galaxy-nexus">Samsung Galaxy Nexus</a>',
'[5]' => '<a href="http://www.example.com/samsung/">Samsung</a>',
'[6]' => '<a href="http://www.example.com/apple/">Apple</a>'
);
$content = str_replace(array_keys($urllist), array_values($urllist), $content);
echo $content;
Output:
This Apple iPhone is from Apple
This Apple iPad is from Apple
This Samsung Galaxy Ace is from Samsung
This Samsung Galaxy Nexus is from Samsung
This is a Samsung
This is an Apple
Answer by Starx
str_replace() should be enough for what you are attempting.
foreach($keywordlist as $key => $link) {
$content = str_replace($key, '<a href="$link">$key</a>', $content);
}
As, I have commented, this will not work as expected because of the repeated duplicate keywords on the keys.
You need to have a fixed format to denote a key. The one I suggest is something like [Apple] and [Apple iPad]. When you implement something similar to this, every keyword will be different, although they contain same inner code inside.
Your updated keyword structure will look something this, after wards.
$keywordlist = array(
'[Apple iPhone]' => 'http://www.example.com/apple/iphone/',
'[Apple iPad]' => 'http://www.example.com/apple/ipad',
'[Samsung Galaxy Ace]' => 'http://www.example.com/samsung/galaxy-ace',
'[Samsung Galaxy Nexus]' => 'http://www.example.com/samsung/galaxy-nexus',
'[Samsung]' => 'http://www.example.com/samsung/',
'[Apple]' => 'http://www.example.com/apple/'
);
If this, options is not feasible to use, as this significantly increase the complexity while developing the content, as needing to wrap every keyword text with [].
