Finding out if string contains string, and splitting it if it does

Question

I want to figure out if a string contains more then 1 occurance of http://

Like this:

http://uploading.com/files/c8e99378/image-slider-skins.zip/http://www.filesonic.com/file/3524497744/image-slider-skins.zip

I know how to find out if it does, but how do I split the string at the begining of the second http?

With strrpos and substr. Or simpler: a regex looking for the first occurence and stripping until there. — mario
– mario, Commented Mar 17, 2013 at 16:39
@mario a REGEX simpler? Please no. It's slower and really not made of tasks as this one — Wouter J
– Wouter J, Commented Mar 17, 2013 at 16:41

Wouter J · Accepted Answer · 2013-03-17 19:24:16Z

1

$parts = explode('http://', $str);
$secondPart = 'http://'.$parts[2];

echo $secondPart;

More information in the documentation of explode

Or some other method (which is simpler and properbly faster):

$firstPart = substr($str, 0, strpos($str, 'http://', 8));

Or you can also use a REGEX which I don't recommend, because it's to heavy for this simple task:

if (preg_match('/(http:\/\/.*)(?=http:\/\/)/', $str, $matches)) {
    echo $matches[1];
}

edited Mar 17, 2013 at 19:24

answered Mar 17, 2013 at 16:37

Wouter J

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6 Comments

John Smith Over a year ago

Ty, looking in to explode now

mario Over a year ago

The explode (totally overused) approach results in three parts. And yes, three lines of code are more effort than one (regex).

Wouter J Over a year ago

@mario more effort to type, but less time to render... (however, there are just 2 lines...) I've also added a second example, which is just one line and maybe the fastest option.

Wouter J Over a year ago

@mario to make you happy, I also added a REGEX example

mario Over a year ago

For small strings, yes. Also I'm very happy. (But btw, I believe OP may have wanted to extract the second URL.)

|

Sumit Bijvani · Accepted Answer · 2013-03-17 16:39:50Z

0

Use explode

$parts = explode('http://', $string);

You can also directly fetch parts of the result into variables:

list($part1, $part2) = explode('http://', $string);

answered Mar 17, 2013 at 16:39

Sumit Bijvani

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1 Comment

mario Over a year ago

It'll be three parts with the whacky explode approach, the first being an empty string.

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