如何在PHP中获取数组中的所有字母字符？
有没有办法让PHP中的所有字母字符（AZ）在一个数组，所以我可以循环通过他们，并显示它们？
$alphas = range('A', 'Z'); 为了得到大小写合并的两个范围：
$alphas = array_merge(range('A', 'Z'), range('a', 'z'));
$alphabet = array('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z');
其他方式：
$c = 'A'; $chars = array($c); while ($c < 'Z') $chars[] = ++$c;
PHP已经提供了这样的应用程序的function。
chr(x)返回整数索引为x的ascii字符。
在某些情况下，这种方法应该是最直观的。
请参阅http://www.asciitable.com/
$UPPERCASE_LETTERS = range(chr(65),chr(90)); $LOWERCASE_LETTERS = range(chr(97),chr(122)); $NUMBERS_ZERO_THROUGH_NINE = range(chr(48),chr(57)); $ALPHA_NUMERIC_CHARS = array_merge($UPPERCASE_LETTERS, $LOWERCASE_LETTERS, $NUMBERS_ZERO_THROUGH_NINE);
<?php $array = Array(); for( $i = 65; $i < 91; $i++){ $array[] = chr($i); } foreach( $array as $k => $v){ echo "$k $v \n"; } ?> $ php loop.php 0 A 1 B 2 C 3 D 4 E 5 F 6 G 7 H ...
范围为AZ，但如果你想从例如从A到DU那么：
function generateAlphabet($na) { $sa = ""; while ($na >= 0) { $sa = chr($na % 26 + 65) . $sa; $na = floor($na / 26) - 1; } return $sa; } $alphabet = Array(); for ($na = 0; $na < 125; $na++) { $alphabet[]=generateAlphabet($na); } print_r($alphabet);
你的答案将如下所示：
Array ( [0] => A [1] => B [2] => C [3] => D [4] => E [5] => F [6] => G [7] => H [8] => I [9] => J [10] => K [11] => L [12] => M [13] => N [14] => O [15] => P [16] => Q [17] => R [18] => S [19] => T [20] => U [21] => V [22] => W [23] => X [24] => Y [25] => Z [26] => AA [27] => AB [28] => AC [29] => AD [30] => AE [31] => AF [32] => AG [33] => AH [34] => AI [35] => AJ [36] => AK [37] => AL [38] => AM [39] => AN [40] => AO [41] => AP [42] => AQ [43] => AR [44] => AS [45] => AT [46] => AU [47] => AV [48] => AW [49] => AX [50] => AY [51] => AZ [52] => BA [53] => BB [54] => BC [55] => BD [56] => BE [57] => BF [58] => BG [59] => BH [60] => BI [61] => BJ [62] => BK [63] => BL [64] => BM [65] => BN [66] => BO [67] => BP [68] => BQ [69] => BR [70] => BS [71] => BT [72] => BU [73] => BV [74] => BW [75] => BX [76] => BY [77] => BZ [78] => CA [79] => CB [80] => CC [81] => CD [82] => CE [83] => CF [84] => CG [85] => CH [86] => CI [87] => CJ [88] => CK [89] => CL [90] => CM [91] => CN [92] => CO [93] => CP [94] => CQ [95] => CR [96] => CS [97] => CT [98] => CU [99] => CV [100] => CW [101] => CX [102] => CY [103] => CZ [104] => DA [105] => DB [106] => DC [107] => DD [108] => DE [109] => DF [110] => DG [111] => DH [112] => DI [113] => DJ [114] => DK [115] => DL [116] => DM [117] => DN [118] => DO [119] => DP [120] => DQ [121] => DR [122] => DS [123] => DT [124] => DU )
如果你需要一个具有字母键和数组元素的数组（例如按字母顺序排列的下拉列表），你可以这样做：
$alphas = array_combine(range('A','Z'),range('A','Z'))
产量：
array (size=26) 'A' => string 'A' (length=1) 'B' => string 'B' (length=1) 'C' => string 'C' (length=1) 'D' => string 'D' (length=1) ...etc
$array = range('a', 'z');
$alphabets = range('A', 'Z'); $doubleAlphabets = array(); $count = 0; foreach($alphabets as $key => $alphabet) { $count++; $letter = $alphabet; while ($letter <= 'Z') { $doubleAlphabets[] = $letter; ++$letter; } } return $doubleAlphabets;
也许这是一个有点offtopic（主题首发问唯一AZ的解决scheme），但cyrrilic字符soltion是：
// to place letters into the array $alphas = array(); foreach (range(chr(0xC0), chr(0xDF)) as $b) { $alphas[] = iconv('CP1251', 'UTF-8', $b); } // or conver array into comma-separated string $alphas = array_reduce($alphas, function($p, $n) { return $p . '\'' . $n . '\','; }); $alphas = rtrim($alphas, ','); // echo string for testing echo $alphas; // or echo mb_strtolower($alphas); for lowercase letters
小写字母
for ($x = 97; $x < 122; $x++) { $y = chr($x); echo $y; echo "<br>"; }
大写字母
for ($x = 65; $x < 90; $x++) { $y = chr($x); echo $y; echo "<br>"; }
