3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump( is_numeric('1 '), is_numeric(' 1') );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/mbHBZ
function name:  (null)
number of ops:  11
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'var_dump'
    3     1        INIT_FCALL                                               'is_numeric'
          2        SEND_VAL                                                 '1+'
          3        DO_ICALL                                         $0      
          4        SEND_VAR                                                 $0
    4     5        INIT_FCALL                                               'is_numeric'
          6        SEND_VAL                                                 '+1'
          7        DO_ICALL                                         $1      
          8        SEND_VAR                                                 $1
          9        DO_ICALL                                                 
    5    10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
165.33 ms | 1385 KiB | 17 Q