PHP: replace variable values within string

Question

I am pretty new to PHP and hope someone here can help me with this:

I have a variable string that looks like the following, containing either nothing OR a series of words, separated with comma and space.

Example:

item1, item2, item3

What would be the best / fastest way to replace the single items in this string by adding an img tag with the same item name as the source + remove the commas ?

The above example should then look as follows:

item1 <img src="item1.png" alt="" /> item2 <img src="item2.png" alt="" /> item3 <img src="item3.png" alt="" />

Many thanks for any help with this, Mike.

A one-liner: echo implode("\n", array_map(function($v) {return '<img src="'.trim($v).'png" alt="" />'; }, explode(',', $str))); — Amal
– Amal, Commented Apr 26, 2014 at 18:38
echo preg_replace('/(\w+),?\s*/', '<img src="${1}.png" alt="" /> ', $str); — Amal
– Amal, Commented Apr 26, 2014 at 18:40

Joshua Kissoon · Accepted Answer · 2014-04-26 18:39:15Z

3

This can be done in a 1-liner, but since you're new to PHP, lets just make it clear.

First split the string to get an array of the different items.

$itemsStr = "item1, item2, item3";  // input string
$items = explode(", ", $itemsStr);  // Gets an array of items

Now traverse the items array and add the string for each item:

foreach($items as $key => $val)
{
    $items[$key] = $item . "<img src='$item.png' alt='' /> ";
}

$output = implode(" ", $items);

answered Apr 26, 2014 at 18:39

Joshua Kissoon

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1 Comment

Ferrakkem Bhuiyan Over a year ago

nice one @Joshua Kissoon

Marcel Gwerder · Accepted Answer · 2014-04-26 18:55:02Z

1

This preg_replace should do it:

$in = 'item1, item2, item3';
$out = preg_replace('/( ?([^,]+)),?/', '$1 <img src="$2.png" alt="" />', $in);

$out then is:

item1 <img src="item1.png" alt="" /> item2 <img src="item2.png" alt="" /> item3 <img src="item3.png" alt="" />

edited Apr 26, 2014 at 18:55

answered Apr 26, 2014 at 18:39

Marcel Gwerder

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1 Comment

Mike Over a year ago

Thanks for this. How would the number change here so that the img source is item1.png or item2.png or item3.png ?

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