{"id":48647,"date":"2024-12-02T11:46:43","date_gmt":"2024-12-02T03:46:43","guid":{"rendered":"https:\/\/fwq.ai\/blog\/48647\/"},"modified":"2024-12-02T11:46:43","modified_gmt":"2024-12-02T03:46:43","slug":"php-%e5%be%aa%e7%8e%af%e4%b8%ad-z-%e9%80%92%e5%a2%9e%e4%b8%ba%e4%bd%95%e5%8f%98%e4%b8%ba-aa-%e8%80%8c%e4%b8%8d%e6%98%af-az%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/48647\/","title":{"rendered":"PHP \u5faa\u73af\u4e2d \\’Z\\’ \u9012\u589e\u4e3a\u4f55\u53d8\u4e3a \\’AA\\’ \u800c\u4e0d\u662f \\’AZ\\’\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

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\"PHP<\/p>\n

php for \u5faa\u73af\u4e2d ‘z’ \u7684\u9012\u589e\u7591\u95ee<\/strong><\/p>\n

\u95ee\u9898\uff1a<\/strong><\/p>\n

<?php
$string = ”;
$j = ‘z’;
for ($i = ‘a’; $i <= $j; $i++) {<\/p>\n

$string .= $i;<\/pre>\n
}
echo strlen($string);
?><\/p>\n
    \n
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    \u56de\u7b54\uff1a<\/strong><\/p>\n
    1. ‘z’ \u9012\u589e\u540e\u4e3a ‘aa’ \u7684\u4f9d\u636e<\/strong><\/p>\n
    php \u5728\u5904\u7406\u5b57\u7b26\u53d8\u91cf\u7684\u7b97\u672f\u8fd0\u7b97\u65f6\u9075\u5faa perl \u7684\u60ef\u4f8b\u3002\u5728 perl \u4e2d\uff0c’z’+1 \u53d8\u6210 ‘aa’\u3002\u56e0\u6b64\uff0c\u5728 php \u4e2d\uff0c’z’+1 \u4e5f\u53d8\u6210 ‘aa’\u3002<\/p>\n
    2. php \u7684\u5b57\u7b26\u4e32\u6bd4\u8f83<\/strong><\/p>\n
    php \u7684\u5b57\u7b26\u4e32\u6bd4\u8f83\u4e0d\u662f\u7eaf\u7cb9\u7684 ascii \u7801\u6bd4\u8f83\u3002\u5bf9\u4e8e ‘zz’ \u548c ‘z’ \u7684\u6bd4\u8f83\uff0cphp \u4f1a\u6bd4\u8f83\u5b83\u4eec\u7684\u7b2c\u4e00\u4e2a\u5b57\u7b26\u3002\u7531\u4e8e\u4e24\u8005\u76f8\u7b49\uff0cphp \u4f1a\u6bd4\u8f83\u5b83\u4eec\u7684\u957f\u5ea6\u3002’zz’ \u7684\u957f\u5ea6\u66f4\u957f\uff0c\u56e0\u6b64 ‘zz’ \u88ab\u8ba4\u4e3a\u6bd4 ‘z’ \u5927\uff0c\u8fd9\u5c31\u89e3\u91ca\u4e86\u4e3a\u4ec0\u4e48\u5faa\u73af\u5728 $i=yz \u65f6\u8df3\u51fa\u3002<\/p>\n
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