How to pick up content within a string up to a "bar/" character

Question

I got the following String:

$link = '13542345/essa_e_minhastring';

How do I take only the value up to the "/" bar and ignore the rest ?

I would like to assign this value to a variable.

I’m using the following code, but it just breaks the string...and does not separate into a variable as I need it:

 $cod = str_replace("/","<br>",$link);
 echo $cod;

The result is:

13542345
essa_e_minhastring

I need it to be just:

13542345

Answer 1

You can break the string by / using the explode() and then just use the first part like this:

$partes = explode("/", $link);
echo $partes[0]; // dá 13542345

Example: https://ideone.com/oAnXfR

Another alternative is use regex thus:

$link = '13542345/essa_e_minhastring';
$pattern = '/[^\/]+/';
preg_match($pattern, $link, $partes, PREG_OFFSET_CAPTURE);
echo $partes[0][0]; // dá 13542345

Example: https://ideone.com/4GGZbY

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I made a test between explode, preg_match, strtok and substr. The test certainly fails because it is so simple and isolated, and therefore not real. But it is interesting. The result among the 4 methods is:

7.9003810882568E-8 sec / por explode
2.0149707794189E-7 sec / por preg_match // <- mais rápida
4.8128128051758E-8 sec / por strtok
5.2464962005615E-8 sec / por substr

Answer 2

The function strstr(), breaks a string by a delimiter and returns the right part by default, by passing the third argument as true the return is the left part.

$link = '13542345/essa_e_minhastring';
echo strstr($link, '/', true);

Another option is explode(), it transforms the string into an array, just take the first element(Indice zero).

This syntax works from 5.4

$link = '13542345/essa_e_minhastring';
$numero = explode('/', $link)[0];
echo $numero;

for lower versions do:

$link = '13542345/essa_e_minhastring';
$numero = explode('/', $link);
echo $numero[0];

Example - ideone

Answer 3

Use the substr function();

It takes the content up to the bar and continues as a string;

$text = "123456/efineinfe";
$text = substr($text, 0, strpos($text, "/"));