Php preg_split add an empty field on result

Question

I try to split a GPS coordinate with function:

$long = "13°47'52.544\"E";
$res = preg_split("/[°'\"]/", $long);

but result is:

array(0=>13, 1=>, 2=>47, 3=>52.544, 4=>E)

why item 1 is add to result ?

Example here: http://www.phpliveregex.com/p/nPv

See https://stackoverflow.com/questions/48534863/splitting-a-string-containing-a-longitude-or-latitude-expression-in-perl, it uses [^\dNSEW.]+ — user1086500, Apr 29 '18 at 15:13

score 1 · Accepted Answer · answered Apr 29 '18 at 15:20

° is two bytes 0xC2 0xB0 and you are not in Unicode "mode". Therefore, it is splitting on the 0xC2 and again on the 0xB0, with an empty item in the middle.

Enable Unicode mode with the u modifier.

$long = "13°47'52.544\"E";
$res = preg_split("/[°'\"]/u", $long);

Php preg_split add an empty field on result

1 Answers1