3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $d=array(); for ($i = 0; $i < 256; $i++) { $d[chr($i)] = $i; } print_r($d);
Output for 4.3.3 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [] => 0 [] => 1 [] => 2 [] => 3 [] => 4 [] => 5 [] => 6 [] => 7 [] => 8 [ ] => 9 [ ] => 10 [ ] => 11 [ ] => 12 [ ] => 13 [] => 14 [] => 15 [] => 16 [] => 17 [] => 18 [] => 19 [] => 20 [] => 21 [] => 22 [] => 23 [] => 24 [] => 25 [] => 26 [] => 27 [] => 28 [] => 29 [] => 30 [] => 31 [ ] => 32 [!] => 33 ["] => 34 [#] => 35 [$] => 36 [%] => 37 [&] => 38 ['] => 39 [(] => 40 [)] => 41 [*] => 42 [+] => 43 [,] => 44 [-] => 45 [.] => 46 [/] => 47 [0] => 48 [1] => 49 [2] => 50 [3] => 51 [4] => 52 [5] => 53 [6] => 54 [7] => 55 [8] => 56 [9] => 57 [:] => 58 [;] => 59 [<] => 60 [=] => 61 [>] => 62 [?] => 63 [@] => 64 [A] => 65 [B] => 66 [C] => 67 [D] => 68 [E] => 69 [F] => 70 [G] => 71 [H] => 72 [I] => 73 [J] => 74 [K] => 75 [L] => 76 [M] => 77 [N] => 78 [O] => 79 [P] => 80 [Q] => 81 [R] => 82 [S] => 83 [T] => 84 [U] => 85 [V] => 86 [W] => 87 [X] => 88 [Y] => 89 [Z] => 90 [[] => 91 [\] => 92 []] => 93 [^] => 94 [_] => 95 [`] => 96 [a] => 97 [b] => 98 [c] => 99 [d] => 100 [e] => 101 [f] => 102 [g] => 103 [h] => 104 [i] => 105 [j] => 106 [k] => 107 [l] => 108 [m] => 109 [n] => 110 [o] => 111 [p] => 112 [q] => 113 [r] => 114 [s] => 115 [t] => 116 [u] => 117 [v] => 118 [w] => 119 [x] => 120 [y] => 121 [z] => 122 [{] => 123 [|] => 124 [}] => 125 [~] => 126 [] => 127 [�] => 128 [�] => 129 [�] => 130 [�] => 131 [�] => 132 [�] => 133 [�] => 134 [�] => 135 [�] => 136 [�] => 137 [�] => 138 [�] => 139 [�] => 140 [�] => 141 [�] => 142 [�] => 143 [�] => 144 [�] => 145 [�] => 146 [�] => 147 [�] => 148 [�] => 149 [�] => 150 [�] => 151 [�] => 152 [�] => 153 [�] => 154 [�] => 155 [�] => 156 [�] => 157 [�] => 158 [�] => 159 [�] => 160 [�] => 161 [�] => 162 [�] => 163 [�] => 164 [�] => 165 [�] => 166 [�] => 167 [�] => 168 [�] => 169 [�] => 170 [�] => 171 [�] => 172 [�] => 173 [�] => 174 [�] => 175 [�] => 176 [�] => 177 [�] => 178 [�] => 179 [�] => 180 [�] => 181 [�] => 182 [�] => 183 [�] => 184 [�] => 185 [�] => 186 [�] => 187 [�] => 188 [�] => 189 [�] => 190 [�] => 191 [�] => 192 [�] => 193 [�] => 194 [�] => 195 [�] => 196 [�] => 197 [�] => 198 [�] => 199 [�] => 200 [�] => 201 [�] => 202 [�] => 203 [�] => 204 [�] => 205 [�] => 206 [�] => 207 [�] => 208 [�] => 209 [�] => 210 [�] => 211 [�] => 212 [�] => 213 [�] => 214 [�] => 215 [�] => 216 [�] => 217 [�] => 218 [�] => 219 [�] => 220 [�] => 221 [�] => 222 [�] => 223 [�] => 224 [�] => 225 [�] => 226 [�] => 227 [�] => 228 [�] => 229 [�] => 230 [�] => 231 [�] => 232 [�] => 233 [�] => 234 [�] => 235 [�] => 236 [�] => 237 [�] => 238 [�] => 239 [�] => 240 [�] => 241 [�] => 242 [�] => 243 [�] => 244 [�] => 245 [�] => 246 [�] => 247 [�] => 248 [�] => 249 [�] => 250 [�] => 251 [�] => 252 [�] => 253 [�] => 254 [�] => 255 )
Output for 4.3.0 - 4.3.2
Array ( [] => 0 [] => 1 [] => 2 [] => 3 [] => 4 [] => 5 [] => 6 [] => 7 [] => 8 [ ] => 9 [ ] => 10 [ ] => 11 [ ] => 12 [ ] => 13 [] => 14 [] => 15 [] => 16 [] => 17 [] => 18 [] => 19 [] => 20 [] => 21 [] => 22 [] => 23 [] => 24 [] => 25 [] => 26 [] => 27 [] => 28 [] => 29 [] => 30 [] => 31 [ ] => 32 [!] => 33 ["] => 34 [#] => 35 [$] => 36 [%] => 37 [&] => 38 ['] => 39 [(] => 40 [)] => 41 [*] => 42 [+] => 43 [,] => 44 [-] => 45 [.] => 46 [/] => 47 [0] => 48 [1] => 49 [2] => 50 [3] => 51 [4] => 52 [5] => 53 [6] => 54 [7] => 55 [8] => 56 [9] => 57 [:] => 58 [;] => 59 [<] => 60 [=] => 61 [>] => 62 [?] => 63 [@] => 64 [A] => 65 [B] => 66 [C] => 67 [D] => 68 [E] => 69 [F] => 70 [G] => 71 [H] => 72 [I] => 73 [J] => 74 [K] => 75 [L] => 76 [M] => 77 [N] => 78 [O] => 79 [P] => 80 [Q] => 81 [R] => 82 [S] => 83 [T] => 84 [U] => 85 [V] => 86 [W] => 87 [X] => 88 [Y] => 89 [Z] => 90 [[] => 91 [\] => 92 []] => 93 [^] => 94 [_] => 95 [`] => 96 [a] => 97 [b] => 98 [c] => 99 [d] => 100 [e] => 101 [f] => 102 [g] => 103 [h] => 104 [i] => 105 [j] => 106 [k] => 107 [l] => 108 [m] => 109 [n] => 110 [o] => 111 [p] => 112 [q] => 113 [r] => 114 [s] => 115 [t] => 116 [u] => 117 [v] => 118 [w] => 119 [x] => 120 [y] => 121 [z] => 122 [{] => 123 [|] => 124 [}] => 125 [~] => 126 [] => 127 [�] => 128 [�] => 129 [�] => 130 [�] => 131 [�] => 132 [�] => 133 [�] => 134 [�] => 135 [�] => 136 [�] => 137 [�] => 138 [�] => 139 [�] => 140 [�] => 141 [�] => 142 [�] => 143 [�] => 144 [�] => 145 [�] => 146 [�] => 147 [�] => 148 [�] => 149 [�] => 150 [�] => 151 [�] => 152 [�] => 153 [�] => 154 [�] => 155 [�] => 156 [�] => 157 [�] => 158 [�] => 159 [�] => 160 [�] => 161 [�] => 162 [�] => 163 [�] => 164 [�] => 165 [�] => 166 [�] => 167 [�] => 168 [�] => 169 [�] => 170 [�] => 171 [�] => 172 [�] => 173 [�] => 174 [�] => 175 [�] => 176 [�] => 177 [�] => 178 [�] => 179 [�] => 180 [�] => 181 [�] => 182 [�] => 183 [�] => 184 [�] => 185 [�] => 186 [�] => 187 [�] => 188 [�] => 189 [�] => 190 [�] => 191 [�] => 192 [�] => 193 [�] => 194 [�] => 195 [�] => 196 [�] => 197 [�] => 198 [�] => 199 [�] => 200 [�] => 201 [�] => 202 [�] => 203 [�] => 204 [�] => 205 [�] => 206 [�] => 207 [�] => 208 [�] => 209 [�] => 210 [�] => 211 [�] => 212 [�] => 213 [�] => 214 [�] => 215 [�] => 216 [�] => 217 [�] => 218 [�] => 219 [�] => 220 [�] => 221 [�] => 222 [�] => 223 [�] => 224 [�] => 225 [�] => 226 [�] => 227 [�] => 228 [�] => 229 [�] => 230 [�] => 231 [�] => 232 [�] => 233 [�] => 234 [�] => 235 [�] => 236 [�] => 237 [�] => 238 [�] => 239 [�] => 240 [�] => 241 [�] => 242 [�] => 243 [�] => 244 [�] => 245 [�] => 246 [�] => 247 [�] => 248 [�] => 249 [�] => 250 [�] => 251 [�] => 252 [�] => 253 [�] => 254 [�] => 255 )