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<?php $p = '{"1":{"section_id":"1","section_left":"1","section_right":"48","section_level":"0","section_name":"Root","nflag":"1"},"2":{"section_id":"2","section_left":"2","section_right":"3","section_level":"1","section_name":"Node 1","nflag":"0"},"3":{"section_id":"3","section_left":"4","section_right":"23","section_level":"1","section_name":"Node 2","nflag":"1"},"7":{"section_id":"7","section_left":"5","section_right":"6","section_level":"2","section_name":"Subnode 1","nflag":"0"},"8":{"section_id":"8","section_left":"7","section_right":"18","section_level":"2","section_name":"Subnode 2","nflag":"1"},"15":{"section_id":"15","section_left":"8","section_right":"17","section_level":"3","section_name":"deeqee","nflag":"1"},"16":{"section_id":"16","section_left":"9","section_right":"16","section_level":"4","section_name":"r3r23r2r","nflag":"1"},"17":{"section_id":"17","section_left":"10","section_right":"15","section_level":"5","section_name":"gfgg","nflag":"1"},"19":{"section_id":"19","section_left":"11","section_right":"14","section_level":"6","section_name":"hgfhf","nflag":"1"},"20":{"section_id":"20","section_left":"12","section_right":"13","section_level":"7","section_name":"hghfgh","nflag":"0"},"9":{"section_id":"9","section_left":"19","section_right":"20","section_level":"2","section_name":"Subnode 3","nflag":"0"},"13":{"section_id":"13","section_left":"21","section_right":"22","section_level":"2","section_name":"adadasdd","nflag":"0"},"4":{"section_id":"4","section_left":"24","section_right":"41","section_level":"1","section_name":"Node 3","nflag":"1"},"10":{"section_id":"10","section_left":"25","section_right":"38","section_level":"2","section_name":"Subnode 1","nflag":"1"},"12":{"section_id":"12","section_left":"26","section_right":"37","section_level":"3","section_name":"Subsubnode 1","nflag":"1"},"21":{"section_id":"21","section_left":"27","section_right":"36","section_level":"4","section_name":"rerwr","nflag":"1"},"22":{"section_id":"22","section_left":"28","section_right":"35","section_level":"5","section_name":"hghf","nflag":"1"},"23":{"section_id":"23","section_left":"29","section_right":"34","section_level":"6","section_name":"nmbnmmm","nflag":"1"},"24":{"section_id":"24","section_left":"30","section_right":"33","section_level":"7","section_name":"qwewe","nflag":"1"},"25":{"section_id":"25","section_left":"31","section_right":"32","section_level":"8","section_name":"yyryrt","nflag":"0"},"11":{"section_id":"11","section_left":"39","section_right":"40","section_level":"2","section_name":"Subnode 2","nflag":"0"},"5":{"section_id":"5","section_left":"42","section_right":"43","section_level":"1","section_name":"Node 4","nflag":"0"},"6":{"section_id":"6","section_left":"44","section_right":"45","section_level":"1","section_name":"Node 5","nflag":"0"},"14":{"section_id":"14","section_left":"46","section_right":"47","section_level":"1","section_name":"dsadadd","nflag":"0"}}'; echo "<pre>"; print_r(json_decode($p,true)); $newArr = []; foreach(json_decode($p,true) as $item) { if($item['section_level'] == 0) { echo $item['section_id']."\n"; } };
Output for 5.6.38, 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
<pre>Array ( [1] => Array ( [section_id] => 1 [section_left] => 1 [section_right] => 48 [section_level] => 0 [section_name] => Root [nflag] => 1 ) [2] => Array ( [section_id] => 2 [section_left] => 2 [section_right] => 3 [section_level] => 1 [section_name] => Node 1 [nflag] => 0 ) [3] => Array ( [section_id] => 3 [section_left] => 4 [section_right] => 23 [section_level] => 1 [section_name] => Node 2 [nflag] => 1 ) [7] => Array ( [section_id] => 7 [section_left] => 5 [section_right] => 6 [section_level] => 2 [section_name] => Subnode 1 [nflag] => 0 ) [8] => Array ( [section_id] => 8 [section_left] => 7 [section_right] => 18 [section_level] => 2 [section_name] => Subnode 2 [nflag] => 1 ) [15] => Array ( [section_id] => 15 [section_left] => 8 [section_right] => 17 [section_level] => 3 [section_name] => deeqee [nflag] => 1 ) [16] => Array ( [section_id] => 16 [section_left] => 9 [section_right] => 16 [section_level] => 4 [section_name] => r3r23r2r [nflag] => 1 ) [17] => Array ( [section_id] => 17 [section_left] => 10 [section_right] => 15 [section_level] => 5 [section_name] => gfgg [nflag] => 1 ) [19] => Array ( [section_id] => 19 [section_left] => 11 [section_right] => 14 [section_level] => 6 [section_name] => hgfhf [nflag] => 1 ) [20] => Array ( [section_id] => 20 [section_left] => 12 [section_right] => 13 [section_level] => 7 [section_name] => hghfgh [nflag] => 0 ) [9] => Array ( [section_id] => 9 [section_left] => 19 [section_right] => 20 [section_level] => 2 [section_name] => Subnode 3 [nflag] => 0 ) [13] => Array ( [section_id] => 13 [section_left] => 21 [section_right] => 22 [section_level] => 2 [section_name] => adadasdd [nflag] => 0 ) [4] => Array ( [section_id] => 4 [section_left] => 24 [section_right] => 41 [section_level] => 1 [section_name] => Node 3 [nflag] => 1 ) [10] => Array ( [section_id] => 10 [section_left] => 25 [section_right] => 38 [section_level] => 2 [section_name] => Subnode 1 [nflag] => 1 ) [12] => Array ( [section_id] => 12 [section_left] => 26 [section_right] => 37 [section_level] => 3 [section_name] => Subsubnode 1 [nflag] => 1 ) [21] => Array ( [section_id] => 21 [section_left] => 27 [section_right] => 36 [section_level] => 4 [section_name] => rerwr [nflag] => 1 ) [22] => Array ( [section_id] => 22 [section_left] => 28 [section_right] => 35 [section_level] => 5 [section_name] => hghf [nflag] => 1 ) [23] => Array ( [section_id] => 23 [section_left] => 29 [section_right] => 34 [section_level] => 6 [section_name] => nmbnmmm [nflag] => 1 ) [24] => Array ( [section_id] => 24 [section_left] => 30 [section_right] => 33 [section_level] => 7 [section_name] => qwewe [nflag] => 1 ) [25] => Array ( [section_id] => 25 [section_left] => 31 [section_right] => 32 [section_level] => 8 [section_name] => yyryrt [nflag] => 0 ) [11] => Array ( [section_id] => 11 [section_left] => 39 [section_right] => 40 [section_level] => 2 [section_name] => Subnode 2 [nflag] => 0 ) [5] => Array ( [section_id] => 5 [section_left] => 42 [section_right] => 43 [section_level] => 1 [section_name] => Node 4 [nflag] => 0 ) [6] => Array ( [section_id] => 6 [section_left] => 44 [section_right] => 45 [section_level] => 1 [section_name] => Node 5 [nflag] => 0 ) [14] => Array ( [section_id] => 14 [section_left] => 46 [section_right] => 47 [section_level] => 1 [section_name] => dsadadd [nflag] => 0 ) ) 1
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 <pre>Array ( [1] => Array ( [section_id] => 1 [section_left] => 1 [section_right] => 48 [section_level] => 0 [section_name] => Root [nflag] => 1 ) [2] => Array ( [section_id] => 2 [section_left] => 2 [section_right] => 3 [section_level] => 1 [section_name] => Node 1 [nflag] => 0 ) [3] => Array ( [section_id] => 3 [section_left] => 4 [section_right] => 23 [section_level] => 1 [section_name] => Node 2 [nflag] => 1 ) [7] => Array ( [section_id] => 7 [section_left] => 5 [section_right] => 6 [section_level] => 2 [section_name] => Subnode 1 [nflag] => 0 ) [8] => Array ( [section_id] => 8 [section_left] => 7 [section_right] => 18 [section_level] => 2 [section_name] => Subnode 2 [nflag] => 1 ) [15] => Array ( [section_id] => 15 [section_left] => 8 [section_right] => 17 [section_level] => 3 [section_name] => deeqee [nflag] => 1 ) [16] => Array ( [section_id] => 16 [section_left] => 9 [section_right] => 16 [section_level] => 4 [section_name] => r3r23r2r [nflag] => 1 ) [17] => Array ( [section_id] => 17 [section_left] => 10 [section_right] => 15 [section_level] => 5 [section_name] => gfgg [nflag] => 1 ) [19] => Array ( [section_id] => 19 [section_left] => 11 [section_right] => 14 [section_level] => 6 [section_name] => hgfhf [nflag] => 1 ) [20] => Array ( [section_id] => 20 [section_left] => 12 [section_right] => 13 [section_level] => 7 [section_name] => hghfgh [nflag] => 0 ) [9] => Array ( [section_id] => 9 [section_left] => 19 [section_right] => 20 [section_level] => 2 [section_name] => Subnode 3 [nflag] => 0 ) [13] => Array ( [section_id] => 13 [section_left] => 21 [section_right] => 22 [section_level] => 2 [section_name] => adadasdd [nflag] => 0 ) [4] => Array ( [section_id] => 4 [section_left] => 24 [section_right] => 41 [section_level] => 1 [section_name] => Node 3 [nflag] => 1 ) [10] => Array ( [section_id] => 10 [section_left] => 25 [section_right] => 38 [section_level] => 2 [section_name] => Subnode 1 [nflag] => 1 ) [12] => Array ( [section_id] => 12 [section_left] => 26 [section_right] => 37 [section_level] => 3 [section_name] => Subsubnode 1 [nflag] => 1 ) [21] => Array ( [section_id] => 21 [section_left] => 27 [section_right] => 36 [section_level] => 4 [section_name] => rerwr [nflag] => 1 ) [22] => Array ( [section_id] => 22 [section_left] => 28 [section_right] => 35 [section_level] => 5 [section_name] => hghf [nflag] => 1 ) [23] => Array ( [section_id] => 23 [section_left] => 29 [section_right] => 34 [section_level] => 6 [section_name] => nmbnmmm [nflag] => 1 ) [24] => Array ( [section_id] => 24 [section_left] => 30 [section_right] => 33 [section_level] => 7 [section_name] => qwewe [nflag] => 1 ) [25] => Array ( [section_id] => 25 [section_left] => 31 [section_right] => 32 [section_level] => 8 [section_name] => yyryrt [nflag] => 0 ) [11] => Array ( [section_id] => 11 [section_left] => 39 [section_right] => 40 [section_level] => 2 [section_name] => Subnode 2 [nflag] => 0 ) [5] => Array ( [section_id] => 5 [section_left] => 42 [section_right] => 43 [section_level] => 1 [section_name] => Node 4 [nflag] => 0 ) [6] => Array ( [section_id] => 6 [section_left] => 44 [section_right] => 45 [section_level] => 1 [section_name] => Node 5 [nflag] => 0 ) [14] => Array ( [section_id] => 14 [section_left] => 46 [section_right] => 47 [section_level] => 1 [section_name] => dsadadd [nflag] => 0 ) ) 1

preferences:
253.81 ms | 413 KiB | 247 Q