Add HTML tag to strings in PHP array using str_ireplace

Question

I want to mark (highlight) the keywords a user has input as search parameters. I've tried the following PHP code to do this. It adds the tag effectively but for some reason displays each string as "Array" rather than it's value.

$find = array("HELLO","WORLD"); // Case-insensitive
$arr = array("Hello","world","!");
print_r(str_ireplace($find,'<mark>'.$find.'</mark>',$arr));

https://i.imgur.com/7vryXlY (demo image, not enough rep to embed)

change it to this print_r(str_ireplace($find,$replace,$arr)); then it will work — Shakeel Ahmad
– Shakeel Ahmad, Commented Jun 2, 2021 at 16:11
Thanks for your suggestion @ShakeelAhmad! That does work, but I need the html <mark> tag added to the results which that doesn't do. Edit: I realise I'd left the $replace array in my code, which may have caused confusion, removed it now as it's unneeded. — Ezra
– Ezra, Commented Jun 2, 2021 at 16:17

AbraCadaver · Accepted Answer · 2021-06-02 17:10:03Z

1

You can only replace an array with an array. You can either loop:

$result = $arr;
foreach($find as $v) {
    $result = str_ireplace($v, "<mark>$v</mark>", $result);
}

Or create a replacement array from the $find array:

$repl = array_map(function($v) { return "<mark>$v</mark>"; }, $find);
$result = str_ireplace($find, $repl, $arr);

Or combined:

$result = str_ireplace($find, array_map(function($v) { return "<mark>$v</mark>"; }, $find), $arr);

edited Jun 2, 2021 at 17:10

answered Jun 2, 2021 at 16:58

AbraCadaver

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1 Comment

Ezra Over a year ago

Thanks for taking the time to help, that combined solution is very concise and worked a treat!

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