替换作为逗号分隔列表一部分的字符串中的值。 PHP

Question

I am trying to replace a name that is part of a comma-separated list.

However, cannot figure out how to do it to match the exact name case insensitive and not catch if is not the exact match

Here is what I got so far.

$search  = "My name is Christina and this is another example";
$AllNames = "Lola,Chris,Monic";
$search = str_ireplace(array_map("trim", explode(",", strtolower($AllNames))), '****', $search);

So in this case The name of Christina will be marked as ****, although I am looking for Chris only. Any idea how I can achieve that.

I found some examples on how to do it if I explode the comma-separated list into an array and then foreach trough each item, but perhaps there is an easier solution.

Answer 1

Try the \\b word boundary in the values along with /i insensitive modifiers with preg_replace :

$search  = "My name is Christina and this is another example, my friends are Lola and Monica and Monic and Chris. As lowercase: lola, christina, monic, monica, chris.";
$AllNames = ["/Lola/i", "/Chris\b/i", "/Monic\b/i"];
$search = preg_replace($AllNames, '****', $search);
echo $search;

Output:

My name is Christina and this is another example, my friends are **** and Monica and **** and ****. As lowercase: ****, christina, ****, monica, ****.

Note that I did not use the word boundary with Lola , but that can be easily added, if needed.