PHP preg_split: Split string by forward slash

Question

I want to split my string 192.168.1.1/24 by forward slash using PHP function preg_split.

My variable :

$ip_address = "192.168.1.1/24";

I have tried :

preg_split("/\//", $ip_address); 
//And
preg_split("/[/]/", $ip_address);

Error message : preg_split(): Delimiter must not be alphanumeric or backslash

I found the following answer here in stackoverflow Php preg_split for forwardslash?, but it not provide a direct answer.

preg_split("/\//", $ip_address); should work fine. It does for me. — Stijn Janssen
– Stijn Janssen, Commented Nov 10, 2015 at 10:16
This question is off-topic: No Repro because the asked question contains a working implementation. — mickmackusa
– mickmackusa ♦, Commented Apr 14, 2024 at 0:10

Alex Andrei · Accepted Answer · 2015-11-10 10:13:03Z

20

Just use another symbol as delimiter

$ip_address = "192.168.1.1/24";

$var = preg_split("#/#", $ip_address); 

print_r($var);

will output

Array
(
    [0] => 192.168.1.1
    [1] => 24
)

answered Nov 10, 2015 at 10:13

Alex Andrei

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3 Comments

Viet Tran Over a year ago

Not work for me: var_dump(preg_split("#/#/#","12/34/5678")); will return bool(false)

Alex Andrei Over a year ago

if you use it like this var_dump(preg_split("#/#","12/34/5678")); it will return the three strings separated by /

Cameron Wilby Over a year ago

For fun - see php.net/manual/en/regexp.reference.delimiters.php for the available delimiters. e.g. var_dump(preg_split("(/)", "192.168.1.1/24")).

A.A Noman · Accepted Answer · 2018-08-04 07:05:00Z

6

This is another way that meet up your solution

$ip_address = "192.168.1.1/24";
$var = preg_split("/\//", $ip_address);
print_r($var);

Output result

Array(
    [0] => 192.168.1.1
    [1] => 24
)

answered Aug 4, 2018 at 7:05

A.A Noman

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Comments

Viet Tran · Accepted Answer · 2017-08-04 16:28:53Z

2

You can use explode('/', "192.168.1.1/24");

answered Aug 4, 2017 at 16:28

Viet Tran

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2 Comments

Zakaria Acharki Over a year ago

I'm sorry but I wanna use preg_split as described in my question using PHP function preg_split.

Viet Tran Over a year ago

Sorry, my bad. I was finding the way to split string and went to your question by google search. So I thought that you had the same problem with me. Sorry.

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