PHP在字符串中查找多个单词并包装在<span>标签中</span>

Question

Im finding keyword "paintball" in a string, and wrapping it in span tags to change it colour to red like this...

$newoutput = str_replace("Paintball", "<span style=\"color:red;\">Paintball</span>", $output); 

echo $newoutput;

Which works, but people are writing it in the field as "Paintball", "paintball", "Paint Ball", "paint ball" etc.

Is there a better way of doing this rather than repeating it for every word?

Ideally something like...

$words = "Paintball", "paintball", "Paint Ball", "paint ball";

$newoutput = str_replace("($words)", "<span>$1</span>", $output);

But im not sure how to write it.

Ok, so a mixture of answers got me here...

$newoutput = preg_replace("/(paint\s*ball|airsoft|laser\s*tag)/i", "<span>$1</span>", $output); 
    echo $newoutput;

And it works perfectly, thank you very much!

Answer 1

This should work for you:

(Here I just use preg_replace() with the modifier i for case insensitivity)

<?php

    $output = "LaSer Tag";
    $newoutput = preg_replace("/(Airsoft|Paintball|laser tag)/i", "<span style=\"color:red;\">$1</span>", $output); 
    echo $newoutput;

?>

EDIT:

Besides that this is invalid syntax:

$words = "Paintball", "paintball", "Paint Ball", "paint ball";

and you probably meant this:

$words = ["Paintball", "paintball", "Paint Ball", "paint ball"];
       //^ See here array syntax                              ^

You can use something like this then

$newoutput = preg_replace("/(" . implode("|", $words) . ")/i", "<span style=\"color:red;\">$1</span>", $output); 

Answer 2

You could use preg_replace , passing it an array of words and doing a case-insensitive match using the i modifier:

$patterns = array('/paint\s?ball/i', '/airsoft/i', '/laser tag/i');
$newoutput = preg_replace($patterns, '<span style="color:red;">$0</span>', $string);

The \\s? in /paint\\s?ball/ matches zero or one spaces - you could use \\s* to match zero or more instead if you preferred.

Answer 3

Simple and easy to use

$title  =   get_the_title($post->ID);
$arraytitle = explode(" ", $title);
for($i=0;$i<sizeof($arraytitle);$i++){
    if($i == 0){
        echo $arraytitle[0].' ';
    }elseif($i >= 0){
        echo '<span>'.$arraytitle[$i].'</span>'." ";
    }
}

Answer 4

use this:

function colorMyWord($word, $output)
{
   $target_words = array('paintball', 'paint ball', 'airsoft');
   if(in_array($target_words, $word))
   {
      $newoutput = str_ireplace($word, "<span style=\"color:red;\">$word</span>", $output); 

 return $newoutput;
}

Usage :

echo colorMyWord('Paintball', 'I need a Paintball');