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<?php $var = 'foo'; $t = microtime(); $somequery = "some query '$var'"; echo 'Interpolation: ', microtime() - $t, ' ms', PHP_EOL; $t = microtime(); $somequery = "some query '" . $var . "'"; echo 'Concatenation: ', microtime() - $t, ' ms', PHP_EOL; $t = microtime(); $somequery = sprintf("some query '%s'", $var); echo 'sprintf: ', microtime() - $t, ' ms', PHP_EOL;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/gVqVH
function name:  (null)
number of ops:  44
compiled vars:  !0 = $var, !1 = $t, !2 = $somequery
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'foo'
    4     1        INIT_FCALL                                               'microtime'
          2        DO_ICALL                                         $4      
          3        ASSIGN                                                   !1, $4
    5     4        ROPE_INIT                                     3  ~7      'some+query+%27'
          5        ROPE_ADD                                      1  ~7      ~7, !0
          6        ROPE_END                                      2  ~6      ~7, '%27'
          7        ASSIGN                                                   !2, ~6
    6     8        ECHO                                                     'Interpolation%3A+'
          9        INIT_FCALL                                               'microtime'
         10        DO_ICALL                                         $10     
         11        SUB                                              ~11     $10, !1
         12        ECHO                                                     ~11
         13        ECHO                                                     '+ms'
         14        ECHO                                                     '%0A'
    8    15        INIT_FCALL                                               'microtime'
         16        DO_ICALL                                         $12     
         17        ASSIGN                                                   !1, $12
    9    18        CONCAT                                           ~14     'some+query+%27', !0
         19        CONCAT                                           ~15     ~14, '%27'
         20        ASSIGN                                                   !2, ~15
   10    21        ECHO                                                     'Concatenation%3A+'
         22        INIT_FCALL                                               'microtime'
         23        DO_ICALL                                         $17     
         24        SUB                                              ~18     $17, !1
         25        ECHO                                                     ~18
         26        ECHO                                                     '+ms'
         27        ECHO                                                     '%0A'
   12    28        INIT_FCALL                                               'microtime'
         29        DO_ICALL                                         $19     
         30        ASSIGN                                                   !1, $19
   13    31        INIT_FCALL                                               'sprintf'
         32        SEND_VAL                                                 'some+query+%27%25s%27'
         33        SEND_VAR                                                 !0
         34        DO_ICALL                                         $21     
         35        ASSIGN                                                   !2, $21
   14    36        ECHO                                                     'sprintf%3A+'
         37        INIT_FCALL                                               'microtime'
         38        DO_ICALL                                         $23     
         39        SUB                                              ~24     $23, !1
         40        ECHO                                                     ~24
         41        ECHO                                                     '+ms'
         42        ECHO                                                     '%0A'
         43      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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