3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set( 'default_charset', 'iso-8859-1' ); var_dump( ini_get("mbstring.internal_encoding") ); var_dump( ini_get("mbstring.http_input") ); var_dump( ini_get("mbstring.http_output") ); var_dump(mb_internal_encoding()); var_dump(mb_strlen( "\xc3\xb6" )); var_dump(mb_strlen( "\xc3\xb6", '8bit' ));
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.26, 8.3.0 - 8.3.14, 8.4.1
string(0) "" string(0) "" string(0) "" string(10) "ISO-8859-1" int(2) int(2)
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
string(0) "" string(0) "" string(0) "" string(5) "UTF-8" int(1) int(2)
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38
string(0) "" string(4) "pass" string(4) "pass" string(10) "ISO-8859-1" int(2) int(2)
Output for 5.2.7 - 5.2.17
bool(false) string(4) "pass" string(4) "pass" string(10) "ISO-8859-1" int(2) int(2)
Output for 4.3.3 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.6
string(10) "ISO-8859-1" string(4) "pass" string(4) "pass" string(10) "ISO-8859-1" int(2) int(2)
Output for 4.3.0 - 4.3.2
string(4) "none" string(4) "pass" string(4) "pass" string(4) "pass" int(2) int(2)

preferences:
82 ms | 412 KiB | 5 Q