{"id":157,"date":"2008-12-15T13:37:00","date_gmt":"2008-12-15T05:37:00","guid":{"rendered":""},"modified":"2013-11-19T21:46:43","modified_gmt":"2013-11-19T13:46:43","slug":"php%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0%e4%b8%80-%e5%be%85%e7%bb%ad","status":"publish","type":"post","link":"https:\/\/kyle.ai\/blog\/157.html","title":{"rendered":"PHP\u5b66\u4e60\u7b14\u8bb0[\u4e00]"},"content":{"rendered":"

_file_ \u8868\u793a\u5f53\u524dPHP\u7a0b\u5e8f\u540d
\n_line_ \u8868\u793a\u5f53\u524d\u6267\u884c\u8bed\u53e5\u5728PHP\u7a0b\u5e8f\u6587\u4ef6\u4e2d\u7684\u884c\u6570
\nPHP_version \u8868\u793a\u5f53\u524dPHP\u7684\u7248\u672c\u53f7
\nPHP_os \u5f53\u524d\u64cd\u4f5c\u7cfb\u7edf\u7684\u7c7b\u578b
\nforeach\u8bed\u53e5 foreach(array_expression as $value){ statement} \u4e3b\u8981\u7528\u4e8e\u904d\u5386\u6570\u7ec4\u7684\u5faa\u73af\u8bed\u53e5
\necho (”
\n“) \u8f93\u5165\u4e00\u4e2a\u56de\u8f66\uff0c\u4e5f\u53ef\u5199\u4f5cecho ”
\n”
\necho ”<\/p>\n

” \u8f93\u5165\u4e00\u4e2a\u6a2a\u7ebf
\necho Date(‘Y-m-d’); \u51fd\u6570\u5927\u5c0f\u5199\u5c31\u65e0\u6240\u8c13\u4e86 2008-12-15
\necho date(‘y-m-d’); 08-12-15
\necho date(‘Y-M-d’); 2008-Dec-15
\necho date(‘Y-M-D’); 2008-Dec-Mon<\/p>\n

strlen() \u83b7\u53d6\u5b57\u7b26\u4e32\u7684\u957f\u5ea6
\nstrcmp() \u6267\u884c\u5b57\u7b26\u4e32\u7684\u5927\u5c0f\u6bd4\u8f83\uff0c\u5e76\u533a\u5206\u5927\u5c0f\u5199
\nstrcasecmp() \u8fdb\u884c\u5b57\u7b26\u4e32\u6bd4\u8f83\uff0c\u4e0d\u533a\u5206\u5927\u5c0f
\nstrspn() \u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\u5305\u542b\u53e6\u5916\u4e00\u4e2a\u5b57\u7b26\u4e32\u7684\u7b2c\u4e00\u90e8\u5206
\nstrcspn() \u8fd4\u56destr1\u4e2d\u5305\u542bstr2\u4e2d\u6240\u6709\u6ca1\u6709\u5b57\u7b26\u7684\u7b2c\u4e00\u90e8\u5206\u957f\u5ea6
\nstrtolower() \u5168\u90e8\u8f6c\u6362\u6210\u5c0f\u5199\u5b57\u6bcd
\nstrtoupper() \u5168\u90e8\u8f6c\u6362\u6210\u5927\u5199\u5b57\u6bcd
\nucfirst() \u7b2c\u4e00\u4e2a\u5b57\u5b57\u6bcd\u8f6c\u6362\u6210\u5927\u5199
\nucwords() \u628a\u5b57\u7b26\u4e32\u7684\u6bcf\u4e2a\u5355\u8bcd\u7684\u9996\u5b57\u6bcd\u8f6c\u6362\u4e3a\u5927\u5199\u5b57\u6bcd
\nbasename() \u8fd4\u56de\u8def\u5f84\u4e2d\u7684\u6587\u4ef6\u90e8\u5206 $filename=basename(“\\9\\jack\\1.txt”) 1.txt
\ndirname() \u8fd4\u56de\u8def\u5f84\u4e2d\u7684\u76ee\u5f55\u90e8\u5206
\npathinfo() \u8fd4\u56de\u6587\u4ef6\u8def\u5f84\u7684\u4fe1\u606f
\nrealpath() \u8fd4\u56de\u89c4\u8303\u7684\u7edd\u5bf9\u8def\u5f84\u540d<\/p>\n

\u8ba9php\u652f\u6301\u77ed\u6807\u8bb0\u914d\u7f6ephp.ini\uff0c\u5c06 shot_open_tag=Off \u6539\u6210On<\/p>\n

header(“location:index.php”);\u524d\u5f80 index.php\u9875\u9762<\/p>\n

\u8f93\u5165\u6846: input type=”text” name=”name1″
\n\u6309\u94ae:input type=”submit”<\/p>\n

php\u6570\u5b66\u51fd\u6570:<\/p>\n

abs() \u7edd\u5bf9\u503c
\nasin() \u53cd\u6b63\u5f26
\nceil() \u8fdb\u4e00\u6cd5\u53d6\u6574
\ndecbin() \u5341\u8fdb\u5236\u8f6c\u4e3a\u4e8c\u8fdb\u5236
\nfloor() \u820d\u53bb\u6cd5\u53d6\u6574
\nmax() \u6c42\u6700\u5927\u503c
\nmin() \u6c42\u6700\u5c0f\u503c
\npow() \u6307\u6570\u8868\u8fbe\u5f0f
\nrand() \u4ea7\u751f\u4e00\u4e2a\u968f\u673a\u6574\u6570
\nround() \u5bf9\u6d6e\u70b9\u6570\u8fdb\u884c\u56db\u820d\u4e94\u5165
\nsin() \u6b63\u5f26
\nsqrt() \u5e73\u65b9\u6839<\/p>\n

bool in_array ( $needle , array $haystack ) \u67e5\u770b$needle\u662f\u5426\u5728$haystack\u5185<\/p>\n

func_num_args() \u8fd4\u56de\u81ea\u5b9a\u4e49\u7684\u51fd\u6570\u4e2d\u4f20\u5165\u7684\u53c2\u6570\u4e2a\u6570
\nfunc_get_arg($arg_num) \u53d6\u5f97\u7b2carg_num+1\u4e2a\u53c2\u6570\u7684\u503c
\nfunc_get_args() \u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u6240\u6709\u53c2\u6570\u7684\u6570\u7ec4<\/p>\n

substr(str1,start,length); \u622a\u53d6\u5b57\u7b26\u4e32\u7684\u51fd\u6570\uff0c\u548cdelphi\u7684copy\u51fd\u6570\u5dee\u4e0d\u591a\uff0cstart\u53ef\u4ee5\u53d6\u8d1f\u503c<\/p>\n

trim() \u548cdelphi\u7528\u6cd5\u4e00\u6837\uff0c\u6ce8\u610f\u662f\u5c0f\u5199<\/p>\n

int intval (mixed $var [, int $base ]) Returns the integer value of var<\/p>\n

php\u4e2d\u6574\u9664\u7528 floor(4\/3)<\/p>\n

\u83b7\u53d6IP\uff0c<\/p>\n

\r\n$vip=getenv('REMOTE_ADDR');\r\n$IP = getenv('HTTP_CLIENT_IP');\r\nfunction getIp()\r\n{\r\nif(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown'))\r\n{\r\n$IP = getenv('HTTP_CLIENT_IP');\r\n}\r\nelseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown'))\r\n{\r\n$IP = getenv('HTTP_X_FORWARDED_FOR');\r\n}\r\nelseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown'))\r\n{\r\n$IP = getenv('REMOTE_ADDR');\r\n}\r\nelseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown'))\r\n{\r\n$IP = $_SERVER['REMOTE_ADDR'];\r\n}\r\nreturn $IP ? $IP : "unknow";\r\n}\r\n<\/pre>\n
strcasecmp()\u51fd\u6570\u6bd4\u8f83\u4e24\u4e2a\u5b57\u7b26\u4e32.(\u4e0d\u533a\u5206\u5927\u5c0f\u5199,\u7c7b\u4f3c\u4e8estrcmp())
\n\u8be5\u51fd\u6570\u8fd4\u56de\uff1a
\n0 – \u5982\u679c\u4e24\u4e2a\u5b57\u7b26\u4e32\u76f8\u7b49
\n0 – \u5982\u679c string1 \u5927\u4e8e string2<\/p>\n
\r\n\/\/\u83b7\u53d6\u56fe\u7247\u5c3a\u5bf8\r\n<?php\r\n$arr=getimagesize("1.jpg");\r\necho $arr[0]."<br\/>"; \/\/the width\r\necho $arr[1];          \/\/the heigth\r\n?>\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
_file_ \u8868\u793a\u5f53\u524dPHP\u7a0b\u5e8f\u540d _line_ \u8868\u793a\u5f53\u524d\u6267\u884c\u8bed\u53e5\u5728PHP\u7a0b\u5e8f\u6587\u4ef6\u4e2d\u7684\u884c\u6570 PHP_versi […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-157","post","type-post","status-publish","format-standard","hentry","category-my_notes"],"_links":{"self":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/comments?post=157"}],"version-history":[{"count":4,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/157\/revisions"}],"predecessor-version":[{"id":4854,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/157\/revisions\/4854"}],"wp:attachment":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/media?parent=157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/categories?post=157"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/tags?post=157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}