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run code in 150+ php & hhvm versions
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<?php $array = array_combine(range(0,450),range(0,450)); echo '<pre>'; print_r($array); echo '</pre>';
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
<pre>Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 3 [4] => 4 [5] => 5 [6] => 6 [7] => 7 [8] => 8 [9] => 9 [10] => 10 [11] => 11 [12] => 12 [13] => 13 [14] => 14 [15] => 15 [16] => 16 [17] => 17 [18] => 18 [19] => 19 [20] => 20 [21] => 21 [22] => 22 [23] => 23 [24] => 24 [25] => 25 [26] => 26 [27] => 27 [28] => 28 [29] => 29 [30] => 30 [31] => 31 [32] => 32 [33] => 33 [34] => 34 [35] => 35 [36] => 36 [37] => 37 [38] => 38 [39] => 39 [40] => 40 [41] => 41 [42] => 42 [43] => 43 [44] => 44 [45] => 45 [46] => 46 [47] => 47 [48] => 48 [49] => 49 [50] => 50 [51] => 51 [52] => 52 [53] => 53 [54] => 54 [55] => 55 [56] => 56 [57] => 57 [58] => 58 [59] => 59 [60] => 60 [61] => 61 [62] => 62 [63] => 63 [64] => 64 [65] => 65 [66] => 66 [67] => 67 [68] => 68 [69] => 69 [70] => 70 [71] => 71 [72] => 72 [73] => 73 [74] => 74 [75] => 75 [76] => 76 [77] => 77 [78] => 78 [79] => 79 [80] => 80 [81] => 81 [82] => 82 [83] => 83 [84] => 84 [85] => 85 [86] => 86 [87] => 87 [88] => 88 [89] => 89 [90] => 90 [91] => 91 [92] => 92 [93] => 93 [94] => 94 [95] => 95 [96] => 96 [97] => 97 [98] => 98 [99] => 99 [100] => 100 [101] => 101 [102] => 102 [103] => 103 [104] => 104 [105] => 105 [106] => 106 [107] => 107 [108] => 108 [109] => 109 [110] => 110 [111] => 111 [112] => 112 [113] => 113 [114] => 114 [115] => 115 [116] => 116 [117] => 117 [118] => 118 [119] => 119 [120] => 120 [121] => 121 [122] => 122 [123] => 123 [124] => 124 [125] => 125 [126] => 126 [127] => 127 [128] => 128 [129] => 129 [130] => 130 [131] => 131 [132] => 132 [133] => 133 [134] => 134 [135] => 135 [136] => 136 [137] => 137 [138] => 138 [139] => 139 [140] => 140 [141] => 141 [142] => 142 [143] => 143 [144] => 144 [145] => 145 [146] => 146 [147] => 147 [148] => 148 [149] => 149 [150] => 150 [151] => 151 [152] => 152 [153] => 153 [154] => 154 [155] => 155 [156] => 156 [157] => 157 [158] => 158 [159] => 159 [160] => 160 [161] => 161 [162] => 162 [163] => 163 [164] => 164 [165] => 165 [166] => 166 [167] => 167 [168] => 168 [169] => 169 [170] => 170 [171] => 171 [172] => 172 [173] => 173 [174] => 174 [175] => 175 [176] => 176 [177] => 177 [178] => 178 [179] => 179 [180] => 180 [181] => 181 [182] => 182 [183] => 183 [184] => 184 [185] => 185 [186] => 186 [187] => 187 [188] => 188 [189] => 189 [190] => 190 [191] => 191 [192] => 192 [193] => 193 [194] => 194 [195] => 195 [196] => 196 [197] => 197 [198] => 198 [199] => 199 [200] => 200 [201] => 201 [202] => 202 [203] => 203 [204] => 204 [205] => 205 [206] => 206 [207] => 207 [208] => 208 [209] => 209 [210] => 210 [211] => 211 [212] => 212 [213] => 213 [214] => 214 [215] => 215 [216] => 216 [217] => 217 [218] => 218 [219] => 219 [220] => 220 [221] => 221 [222] => 222 [223] => 223 [224] => 224 [225] => 225 [226] => 226 [227] => 227 [228] => 228 [229] => 229 [230] => 230 [231] => 231 [232] => 232 [233] => 233 [234] => 234 [235] => 235 [236] => 236 [237] => 237 [238] => 238 [239] => 239 [240] => 240 [241] => 241 [242] => 242 [243] => 243 [244] => 244 [245] => 245 [246] => 246 [247] => 247 [248] => 248 [249] => 249 [250] => 250 [251] => 251 [252] => 252 [253] => 253 [254] => 254 [255] => 255 [256] => 256 [257] => 257 [258] => 258 [259] => 259 [260] => 260 [261] => 261 [262] => 262 [263] => 263 [264] => 264 [265] => 265 [266] => 266 [267] => 267 [268] => 268 [269] => 269 [270] => 270 [271] => 271 [272] => 272 [273] => 273 [274] => 274 [275] => 275 [276] => 276 [277] => 277 [278] => 278 [279] => 279 [280] => 280 [281] => 281 [282] => 282 [283] => 283 [284] => 284 [285] => 285 [286] => 286 [287] => 287 [288] => 288 [289] => 289 [290] => 290 [291] => 291 [292] => 292 [293] => 293 [294] => 294 [295] => 295 [296] => 296 [297] => 297 [298] => 298 [299] => 299 [300] => 300 [301] => 301 [302] => 302 [303] => 303 [304] => 304 [305] => 305 [306] => 306 [307] => 307 [308] => 308 [309] => 309 [310] => 310 [311] => 311 [312] => 312 [313] => 313 [314] => 314 [315] => 315 [316] => 316 [317] => 317 [318] => 318 [319] => 319 [320] => 320 [321] => 321 [322] => 322 [323] => 323 [324] => 324 [325] => 325 [326] => 326 [327] => 327 [328] => 328 [329] => 329 [330] => 330 [331] => 331 [332] => 332 [333] => 333 [334] => 334 [335] => 335 [336] => 336 [337] => 337 [338] => 338 [339] => 339 [340] => 340 [341] => 341 [342] => 342 [343] => 343 [344] => 344 [345] => 345 [346] => 346 [347] => 347 [348] => 348 [349] => 349 [350] => 350 [351] => 351 [352] => 352 [353] => 353 [354] => 354 [355] => 355 [356] => 356 [357] => 357 [358] => 358 [359] => 359 [360] => 360 [361] => 361 [362] => 362 [363] => 363 [364] => 364 [365] => 365 [366] => 366 [367] => 367 [368] => 368 [369] => 369 [370] => 370 [371] => 371 [372] => 372 [373] => 373 [374] => 374 [375] => 375 [376] => 376 [377] => 377 [378] => 378 [379] => 379 [380] => 380 [381] => 381 [382] => 382 [383] => 383 [384] => 384 [385] => 385 [386] => 386 [387] => 387 [388] => 388 [389] => 389 [390] => 390 [391] => 391 [392] => 392 [393] => 393 [394] => 394 [395] => 395 [396] => 396 [397] => 397 [398] => 398 [399] => 399 [400] => 400 [401] => 401 [402] => 402 [403] => 403 [404] => 404 [405] => 405 [406] => 406 [407] => 407 [408] => 408 [409] => 409 [410] => 410 [411] => 411 [412] => 412 [413] => 413 [414] => 414 [415] => 415 [416] => 416 [417] => 417 [418] => 418 [419] => 419 [420] => 420 [421] => 421 [422] => 422 [423] => 423 [424] => 424 [425] => 425 [426] => 426 [427] => 427 [428] => 428 [429] => 429 [430] => 430 [431] => 431 [432] => 432 [433] => 433 [434] => 434 [435] => 435 [436] => 436 [437] => 437 [438] => 438 [439] => 439 [440] => 440 [441] => 441 [442] => 442 [443] => 443 [444] => 444 [445] => 445 [446] => 446 [447] => 447 [448] => 448 [449] => 449 [450] => 450 ) </pre>
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_combine() in /in/GtQMY on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: array_combine() in /in/GtQMY on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_combine() in /in/GtQMY on line 2