I want to match two string and if any words match I want to add tag to them.
I tried something like below below code
$old = "one two three";
$new = "how is one related to two";
foreach (explode(" ", $old) as $str) {
$str .= str_replace($str, "<b>$new</b>", $str);
}
echo trim($str);
Exptected result how is <b>one</b> related to <b>two</b>.
Please suggest me some other way than looping if possible..If its not possible please tell me with looping.
Remember:
str_replace( look_for_this , replace_it_wtih_this, look_through_this);
In your code, you use .=, this will just copy a new sentence on every iteration. I would do it this way:
$old = "one two three";
$sentence = "how is one related to two";
$arr = explode(" ", $old);
foreach ($arr as $word) {
$sentence = str_replace($word, "<b>$word</b>", $sentence);
}
echo trim($sentence);
Result:
how is <b>one</b> related to <b>two</b>
$old.This is a way to do it, I think the mistake was using .= instead of = and also some mixed up parameters for str_replace() (PHP Sandbox)
$searchwords = "one two three";
$string = "how is one related to two";
foreach (explode(" ", $searchwords) as $searchword) {
$string = str_replace($searchword, "<b>{$searchword}</b>", $string);
}
echo trim($string);
Try this:
foreach(explode(" ",$old) as $lol)
{
$new = str_replace($lol, "<b>".$lol."</b>", $new);
}
Try using preg_replace instead of loop
<?php
$pattern = "/one|two|three/i";
$string = "how is one related to two";
$replacement = "<b>$0</b>";
$result = preg_replace($pattern, $replacement, $string);
echo $result;
Result will be
how is <b>one</b> related to <b>two</b>
You can check out preg_replace from here.
preg_replace for all:
function _replace($old,$new){
$search = str_replace(' ',')|(',$old);
return preg_replace("/($search)/i",'<b>$0</b>',$new);
}
echo _replace("one two three","how is one related to two");
