Add http:// prefix to URL when it is missing

Question

Hello Guys im using this to Add http:// prefix to Url when missing. The problem is that he add it to the other Url's where i have http:// already.

foreach($result as $key => &$value)
    {

        if  (strpos($sample['Internetadress'], 'http://') === false){
            $sample['Internetadress'] = 'http://' .$sample['Internetadress'];
            }

    }

i want that he doesnt edit it when it exist.
i want that he doesnt add it when there is no URL.

Sorry about my english im from Germany :D

Possible duplicate of [Add http:// prefix to URL when missing](https://stackoverflow.com/questions/6240414/add-http-prefix-to-url-when-missing) — Matthew Lock, May 03 '18 at 08:19
The solution code to that dupe is exactly what the OP has lol. OP can you provide a data example of one which would cause a double `http://`. My first thoughts are that your url will look like `http://https://` — IsThisJavascript, May 03 '18 at 08:22

pr1nc3 · Answer 1 · 2018-05-03T09:33:58.930

1

Your code shoud cover your first point (when http exist don't change the URL), if not provide us a sample url that you want to modify.

For the second point you just make another check like this:

<?php
$sample['Internetadress']='www.example.com';

if  (strpos($sample['Internetadress'], 'http://') === false && trim($sample['Internetadress'])!==''){
    if(strpos($sample['Internetadress'], 'https://') === false){
        $sample['Internetadress'] = 'http://' .$sample['Internetadress'];
    }
}


echo $sample['Internetadress'];

edited May 03 '18 at 09:33

answered May 03 '18 at 08:24

pr1nc3

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Should probably also be `trim($sample['Internetadress']) !== ''` in case it's got a random space or something in. – Scoots May 03 '18 at 08:37
It works but when the existing URL begins with https:// hes still add http://. All the other problems are solved. Thx for this – Jimmy J. May 03 '18 at 09:11
Ah that's another thing you did not mention that you are going to have https://, you only said http and empty. Will modify it to make it work – pr1nc3 May 03 '18 at 09:12
Yes you right. Sorry about that, i recognized the problem with https:// right now. – Jimmy J. May 03 '18 at 09:16
I will wait for your modify. Thx – Jimmy J. May 03 '18 at 09:27
Ok, i guess there is a delay then. – pr1nc3 May 03 '18 at 09:41

score 0 · Answer 2 · answered May 03 '18 at 17:48

I think in this case a little regex is a good solution:

$urls = [
    'http://www.example.com',
    'foo.bar.com',
    'https://example.com',
    'www.example.com'
];

foreach ($urls as &$url) {
    $url = preg_replace('/^(?!http)/i', 'http://', $url);
}

The values in $urls after the loop are:

[
    "http://www.example.com",
    "http://foo.bar.com",
    "https://example.com",
    "http://www.example.com"
]

Also instead of using a foreach loop and passing the values by reference you could use a array_map() like this:

$urls = array_map(function($url) {
    return preg_replace('/^(?!http)/i', 'http://', $url);
}, $urls);

Add http:// prefix to URL when it is missing

2 Answers2