Remove part of a string

You can use the explode function to do this.

$str = "32137hyb8bhbhu837218nhbuhuh&3298j19j2n39";
$str = explode("&",$str);
echo $str[0];

What is the way out

32137hyb8bhbhu837218nhbuhuh

Explanation

The explode function divides a string by the given separator and returns an array containing the separated parts. Since it divides the string 32137hyb8bhbhu837218nhbuhuh&3298j19j2n39 into two parts 32137hyb8bhbhu837218nhbuhuh and 3298j19j2n39 and stores each part in an array index. The part that you need can be accessed in the first array index, in this case, $str[0] .

You can see it working online here

You can use strstr() function by passing the third argument that returns only the left part of the delimiter:

echo strstr('32137hyb8bhbhu837218nhbuhuh&3298j19j2n39', '&', true);

Return:

32137hyb8bhbhu837218nhbuhuh

Try this:

$retorno = explode("&","32137hyb8bhbhu837218nhbuhuh&3298j19j2n39")[0];

See Example here

If you have a preference for REGEX , which I find difficult, you could use this:

$string = '32137hyb8bhbhu837218nhbuhuh&3298j19j2n39';

preg_match('/(.*)&/', $string, $match);

echo $match[1];

Answer:

32137hyb8bhbhu837218nhbuhuh

preg_match uses REGEX of /(.*)&/ will get everything ( .* ) that is before & .

By adding one more option, you can use the combination of % w / a> and substr :

$text = '32137hyb8bhbhu837218nhbuhuh&3298j19j2n39';
echo substr($text, 0, strrpos($text, '&'));

Resulting in:

32137hyb8bhbhu837218nhbuhuh

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