PHP find and replace, without duplicate word

Question

My output is wrong, I want the output to be as follows:

My CCC in my category.

but This is the text that output :

My CCC in my CCCegory

This is the code I tried:

$text = "My cat in my category";
$searchVal = array("cat", "dog", "fish");
$replaceVal = array("CCC", "DDD", "FFF");
$strtext = str_replace($searchVal, $replaceVal, $text );
echo $strtext;

//output: My CCC in my CCCegory

If you're trying to match whole words only then add a space on each side of the search terms. Try $searchVal = array(" cat ", " dog ", " fish "); — bassxzero
– bassxzero, Commented Nov 10, 2021 at 8:52
@bassxzero that would fail though if the word is at the start or end of the text to be searched, unless you pad that text with spaces first. — ADyson
– ADyson, Commented Nov 10, 2021 at 8:53

bassxzero · Accepted Answer · 2021-11-10 09:03:31Z

1

I guess you can use regular expressions and test for word boundaries.

<?php
        
$text = "My cat in my category";
$searchVal = array("~\bcat\b~", "~\bdog\b~", "~\bfish\b~");
$replaceVal = array("CCC", "DDD", "FFF");
$strtext = preg_replace($searchVal, $replaceVal, $text);
echo $strtext;

//output: My CCC in my category

answered Nov 10, 2021 at 9:03

bassxzero

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