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<?php $string = "Hello my Name Is Paloppa: CIao I'm 20 And? Hello! Words' Man Ab"; // Word boundary before the first uppercase letter, followed by any alphanumeric character preg_match_all('/(?<!^)\b[A-Z][a-zA-Z]{1,}\.+[A-Z][a-zA-Z]{1,}\b(?!["!?.\\\'])/', $string, $matches); print_r( $matches[0] );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/S3YH2
function name:  (null)
number of ops:  11
compiled vars:  !0 = $string, !1 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'Hello+my+Name+Is+Paloppa%3A+CIao+I%27m+20+And%3F+Hello%21+Words%27+Man+Ab'
    5     1        INIT_FCALL                                               'preg_match_all'
          2        SEND_VAL                                                 '%2F%28%3F%3C%21%5E%29%5Cb%5BA-Z%5D%5Ba-zA-Z%5D%7B1%2C%7D%5C.%2B%5BA-Z%5D%5Ba-zA-Z%5D%7B1%2C%7D%5Cb%28%3F%21%5B%22%21%3F.%5C%27%5D%29%2F'
          3        SEND_VAR                                                 !0
          4        SEND_REF                                                 !1
          5        DO_ICALL                                                 
    6     6        INIT_FCALL                                               'print_r'
          7        FETCH_DIM_R                                      ~4      !1, 0
          8        SEND_VAL                                                 ~4
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0

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