<?php
for($i="a";$i<="z";$i++) {
echo $i;
}
?>
我有一个问题,如果
$i <="y"
这仍然是正确的并且会输出
a->y
但是如果像上面这样写
$i<="z"
,结果将会是:
这是一段包含所有字母的文本,用于测试编码和解码算法。abcdefghijklmnopqrstuvwxyz aaabacadaeafagahaiajakalamanaoapaqarasatauavawaxayaz babbbcbdbebfbgbhbibjbkblbmbnbobpbqbrbsbtbubvbwbxbybz cacbcccdcecfcgchcicjckclcmcncocpcqcrcsctcucvcwcxcycz dadbdcdddedfdgdhdidjdkdldmdndodpdqdrdsdtdudvdwdxdydz eaebecedeeefegeheiejekelemeneoepeqereseteuevewexeyez fafbfcfdfefffgfhfifjfkflfmfnfofpfqfrfsftfufvfwfxfyfz gagbgcgdgegfggghgigjgkglgmgngogpgqgrgsgtgugvgwgxgygz hahbhchdhehfhghhhihjhkhlhmhnhohphqhrhshthuhvhwhxhyhz iaibicidieifigihiiijikiliminioipiqirisitiuiviwixiyiz jajbjcjdjejfjgjhjijjjkjljmjnjojpjqjrjsjtjujvjwjxjyjz kakbkckdkekfkgkhkikjkkklkmknkokpkqkrksktkukvkwkxkykz lalblcldlelflglhliljlklllmlnlolplqlrlsltlulvlwlxlylz mambmcmdmemfmgmhmimjmkmlmmmnmompmqmrmsmtmumvmwmxmymz nanbncndnenfngnhninjnknlnmnnnonpnqnrnsntnunvnwnxnynz oaobocodoeofogohoiojokolomonooopoqorosotouovowoxoyoz papbpcpdpepfpgphpipjpkplpmpnpopppqprpsptpupvpwpxpypz qaqbqcqdqeqfqgqhqiqjqkqlqmqnqoqpqqqrqsqtquqvqwqxqyqz rarbrcrdrerfrgrhrirjrkrlrmrnrorprqrrrsrtrurvrwrxryrz sasbscsdsesfsgshsisjskslsmsnsospsqsrssstsusvswsxsyszt atbtctdtetftgthtitjtktltmtntotptqtrtstttutvtwtxtytz uaubucudueufuguhuiujukulumunuoupuqurusutuuuvuwuxuyuz vavbvcvdvevfvgvhvivjvkvlvmvnvovpvqvrvsvtvuvvvwvxvyvz wawbwcwdwewfwgwhwiwjwkwlwmwnwowpwqwrwswtwuwvwwwxwywz xabxcxdxexfxgxhxixjxkxlxmxnxoxpxqxrxsxtxuxvxwxxxyxz yaybycydyeyfygyhyiyjykylymynyoypyqyrysytyuyvywyxyyyz
我不知道为什么,有人能帮帮我吗?
echo 'abcdefghijklmnopqrstuvwxyz';
。但除此之外...你不能像使用数字那样使用字符。它不起作用。 - Till Helge