3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump( mb_strwidth(''), mb_strwidth('a'), // LATIN SMALL LETTER A mb_strwidth("\u{ff41}") // FULLWIDTH LATIN SMALL LETTER A );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/BSmeQ
function name:  (null)
number of ops:  15
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'var_dump'
    3     1        INIT_FCALL                                               'mb_strwidth'
          2        SEND_VAL                                                 ''
          3        DO_ICALL                                         $0      
          4        SEND_VAR                                                 $0
    4     5        INIT_FCALL                                               'mb_strwidth'
          6        SEND_VAL                                                 'a'
          7        DO_ICALL                                         $1      
          8        SEND_VAR                                                 $1
    5     9        INIT_FCALL                                               'mb_strwidth'
         10        SEND_VAL                                                 '%EF%BD%81'
         11        DO_ICALL                                         $2      
         12        SEND_VAR                                                 $2
    2    13        DO_ICALL                                                 
    6    14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
298.19 ms | 1015 KiB | 15 Q