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<?php $number = 123456; echo implode(array_map(function($v){ return $v % 2 !== 0 ? mt_rand(0, 9) : $v; }, str_split($number)));
Output for 7.4.10
526406
Output for 7.4.9
121446
Output for 7.4.8
625496
Output for 7.4.7
929476
Output for 7.4.6
522486
Output for 7.4.5
021496
Output for 7.4.4
829466
Output for 7.4.3
325426
Output for 7.4.2
029476
Output for 7.4.1
128446
Output for 7.4.0
625466
Output for 7.3.22
321406
Output for 7.3.21
023426
Output for 7.3.20
824476
Output for 7.3.19
624486
Output for 7.3.18
628466
Output for 7.3.17
424446
Output for 7.3.16
229486
Output for 7.3.15
124476
Output for 7.3.14
224466
Output for 7.3.13
923446
Output for 7.3.12
226406
Output for 7.3.11
229426
Output for 7.3.10
221486
Output for 7.3.9
329456
Output for 7.3.8
126456
Output for 7.3.7
825416
Output for 7.3.6
320496
Output for 7.3.1, 7.3.5
929496
Output for 7.3.4
022446
Output for 7.3.3
127446
Output for 7.3.2
427436
Output for 7.3.0
027446
Output for 7.2.33
924466
Output for 7.2.32
422456
Output for 7.2.31
620486
Output for 7.2.30
425406
Output for 7.2.29
421446
Output for 7.2.28
328446
Output for 7.2.27
225446
Output for 7.2.26
423466
Output for 7.2.25
028486
Output for 7.2.24
728476
Output for 7.2.23
422476
Output for 7.2.22
327436
Output for 7.2.21
721476
Output for 7.2.20
826496
Output for 7.2.19
822406
Output for 7.2.18
926436
Output for 7.2.17
624466
Output for 7.2.16
429486
Output for 7.2.15
625446
Output for 7.2.14
523436
Output for 7.2.13
821416
Output for 7.2.12
426476
Output for 7.2.11
724496
Output for 7.2.10
728426
Output for 7.2.9
622466
Output for 7.2.8
528426
Output for 7.2.7
929486
Output for 7.2.6
622406
Output for 7.2.5
227436
Output for 7.2.4
125486
Output for 7.2.3
629436
Output for 7.2.2
122436
Output for 7.2.1
824496
Output for 7.2.0
223466
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81.35 ms | 401 KiB | 73 Q