3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $letter = 'a'; $counter =0; for ($i=0; $i < 100; $i++) { echo $letter . ' ' . $counter. "\r\n"; $letter++; $counter++; }
Output for 4.3.0 - 7.2.0
a 0 b 1 c 2 d 3 e 4 f 5 g 6 h 7 i 8 j 9 k 10 l 11 m 12 n 13 o 14 p 15 q 16 r 17 s 18 t 19 u 20 v 21 w 22 x 23 y 24 z 25 aa 26 ab 27 ac 28 ad 29 ae 30 af 31 ag 32 ah 33 ai 34 aj 35 ak 36 al 37 am 38 an 39 ao 40 ap 41 aq 42 ar 43 as 44 at 45 au 46 av 47 aw 48 ax 49 ay 50 az 51 ba 52 bb 53 bc 54 bd 55 be 56 bf 57 bg 58 bh 59 bi 60 bj 61 bk 62 bl 63 bm 64 bn 65 bo 66 bp 67 bq 68 br 69 bs 70 bt 71 bu 72 bv 73 bw 74 bx 75 by 76 bz 77 ca 78 cb 79 cc 80 cd 81 ce 82 cf 83 cg 84 ch 85 ci 86 cj 87 ck 88 cl 89 cm 90 cn 91 co 92 cp 93 cq 94 cr 95 cs 96 ct 97 cu 98 cv 99