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<?php $s = 'group1 name=Elisa group2 name=John group3 name=Blah'; $r = ''; preg_match_all('~(group\d) (?:name=(\w*))~',$s,$matches,PREG_SET_ORDER); var_dump($matches); echo "----------DEFAULT------\n"; preg_match_all('~(group\d) (?:name=(\w*))~',$s,$matches); var_dump($matches);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array(3) { [0]=> array(3) { [0]=> string(17) "group1 name=Elisa" [1]=> string(6) "group1" [2]=> string(5) "Elisa" } [1]=> array(3) { [0]=> string(16) "group2 name=John" [1]=> string(6) "group2" [2]=> string(4) "John" } [2]=> array(3) { [0]=> string(16) "group3 name=Blah" [1]=> string(6) "group3" [2]=> string(4) "Blah" } } ----------DEFAULT------ array(3) { [0]=> array(3) { [0]=> string(17) "group1 name=Elisa" [1]=> string(16) "group2 name=John" [2]=> string(16) "group3 name=Blah" } [1]=> array(3) { [0]=> string(6) "group1" [1]=> string(6) "group2" [2]=> string(6) "group3" } [2]=> array(3) { [0]=> string(5) "Elisa" [1]=> string(4) "John" [2]=> string(4) "Blah" } }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(3) { [0]=> array(3) { [0]=> string(17) "group1 name=Elisa" [1]=> string(6) "group1" [2]=> string(5) "Elisa" } [1]=> array(3) { [0]=> string(16) "group2 name=John" [1]=> string(6) "group2" [2]=> string(4) "John" } [2]=> array(3) { [0]=> string(16) "group3 name=Blah" [1]=> string(6) "group3" [2]=> string(4) "Blah" } } ----------DEFAULT------ array(3) { [0]=> array(3) { [0]=> string(17) "group1 name=Elisa" [1]=> string(16) "group2 name=John" [2]=> string(16) "group3 name=Blah" } [1]=> array(3) { [0]=> string(6) "group1" [1]=> string(6) "group2" [2]=> string(6) "group3" } [2]=> array(3) { [0]=> string(5) "Elisa" [1]=> string(4) "John" [2]=> string(4) "Blah" } }

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