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<?php $string = '[country ln=COUNTRIES][cn=us]USA[/cn], [cn=hu]Hungary[/cn], [cn=ru]Russia[/cn], [cn=gb]Great Britain[/cn][/country]'; $pattern = '#\[country ln=(.*?)\]|\[cn=(.*?)\](.*?)\[\/cn\]|\[\/country\]|,\s*#ie'; echo preg_replace($pattern, "(('$1')?'$1:<br />':'').(('$2')?'<img src=\"$2.png\" border=\"0\" alt=\"$3\" class=\"ui-icon-country\" />$3':'')", $string);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/4WeNp
function name:  (null)
number of ops:  9
compiled vars:  !0 = $string, !1 = $pattern
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%5Bcountry+ln%3DCOUNTRIES%5D%5Bcn%3Dus%5DUSA%5B%2Fcn%5D%2C+%5Bcn%3Dhu%5DHungary%5B%2Fcn%5D%2C+%5Bcn%3Dru%5DRussia%5B%2Fcn%5D%2C+%5Bcn%3Dgb%5DGreat+Britain%5B%2Fcn%5D%5B%2Fcountry%5D'
    4     1        ASSIGN                                                   !1, '%23%5C%5Bcountry+ln%3D%28.%2A%3F%29%5C%5D%7C%5C%5Bcn%3D%28.%2A%3F%29%5C%5D%28.%2A%3F%29%5C%5B%5C%2Fcn%5C%5D%7C%5C%5B%5C%2Fcountry%5C%5D%7C%2C%5Cs%2A%23ie'
    5     2        INIT_FCALL                                               'preg_replace'
          3        SEND_VAR                                                 !1
          4        SEND_VAL                                                 '%28%28%27%241%27%29%3F%27%241%3A%3Cbr+%2F%3E%27%3A%27%27%29.%28%28%27%242%27%29%3F%27%3Cimg+src%3D%22%242.png%22+border%3D%220%22+alt%3D%22%243%22+class%3D%22ui-icon-country%22+%2F%3E%243%27%3A%27%27%29'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $4      
          7        ECHO                                                     $4
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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