3v4l.org

run code in 500+ PHP versions simultaneously
<?php $compat_level = 'foo'; $headers['X-EBAY-API-COMPATIBILITY-LEVEL'] = $compat_level; var_dump($headers); $headers = array ( 'X-EBAY-API-COMPATIBILITY-LEVEL: ' . $compat_level ); var_dump($headers); // But I think you may have meant: $headers = array( 'X-EBAY-API-COMPATIBILITY-LEVEL' => $compat_level ); var_dump($headers);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/N3eeR
function name:  (null)
number of ops:  18
compiled vars:  !0 = $compat_level, !1 = $headers
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                       !0, 'foo'
    4     1        ASSIGN_DIM                                                   !1, 'X-EBAY-API-COMPATIBILITY-LEVEL'
          2        OP_DATA                                                      !0
    6     3        INIT_FCALL                                                   'var_dump'
          4        SEND_VAR                                                     !1
          5        DO_ICALL                                                     
    8     6        CONCAT                                               ~5      'X-EBAY-API-COMPATIBILITY-LEVEL%3A+', !0
          7        INIT_ARRAY                                           ~6      ~5
          8        ASSIGN                                                       !1, ~6
    9     9        INIT_FCALL                                                   'var_dump'
         10        SEND_VAR                                                     !1
         11        DO_ICALL                                                     
   12    12        INIT_ARRAY                                           ~9      !0, 'X-EBAY-API-COMPATIBILITY-LEVEL'
         13        ASSIGN                                                       !1, ~9
   13    14        INIT_FCALL                                                   'var_dump'
         15        SEND_VAR                                                     !1
         16        DO_ICALL                                                     
         17      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
181.09 ms | 2507 KiB | 13 Q