{"id":857,"date":"2021-03-06T10:35:10","date_gmt":"2021-03-06T02:35:10","guid":{"rendered":"http:\/\/www.tra56.com\/?p=857"},"modified":"2021-03-06T10:35:10","modified_gmt":"2021-03-06T02:35:10","slug":"857","status":"publish","type":"post","link":"https:\/\/www.tra56.com\/857.html","title":{"rendered":"PHP\u5e38\u7528\u51fd\u6570"},"content":{"rendered":"
\/\/PHP\u8bbe\u7f6e\u8de8\u57df\r\nheader("Access-Control-Allow-Origin:*");\r\n\r\n\/\/PHP\u8bbe\u7f6eJSON\u5934 \u4ee5JSON\u683c\u5f0f\u8f93\u51fa\r\nheader("Content-type:application\/json; charset=utf-8");\r\n\r\n\/\/\u6b63\u5219\u53d6\u5b57\u7b26\u4e32\r\npreg_match_all('\/\u5b57\u7b26\u4e32(.*?)\u5b57\u7b26\u4e32\/i',$data,$out);\r\n\r\n\/\/ PHP\u628aJSON\u5bf9\u8c61\u8f6c\u5b57\u7b26\u4e32\u4e0d\u8f6c\u7801\u8f93\u51fa\r\njson_encode($results, JSON_UNESCAPED_UNICODE);\r\n\r\n\/\/PHP\u8bbe\u7f6e\u6700\u5927\u8fd0\u884c\u65f6\u95f4 0 \u662f\u6c38\u4e45\r\nset_time_limit(0);\r\n\r\n\/\/PHP\u8bbe\u7f6e\u6700\u5927\u8fd0\u884c\u5185\u5b58 1024M \u662f1G\r\nini_set('memory_limit', '1024M');\r\n\r\n\/\/\u8fd4\u56de\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u4e2a\u6570\uff0c\u53ef\u4ee5\u7406\u89e3\u4e3a\u8fd4\u56de\u6570\u7ec4\u7684\u957f\u5ea6\r\ncount();\r\n\r\n\/\/\u83b7\u53d6\u53d8\u91cf\u4e2d\u7684\u5b57\u7b26\u4e32\u503c\uff0c\u53ef\u4ee5\u7406\u89e3\u4e3a\u628a\u53d8\u91cf\u8f6c\u6362\u6210\u5b57\u7b26\u4e32\u7c7b\u578b\r\nstrval();\r\n\r\n\/\/\u67e5\u8be2\u6570\u7ec4\u91cc\u662f\u5426\u5b58\u5728\u7740\u6307\u5b9a\u7684\u5065\u540d\uff0c\u8fd4\u56detrue\u548cfalse\r\narray_key_exists(\u952e\u540d,\u6570\u7ec4);\r\n\r\n\/\/\u7279\u6b8a\u5b57\u7b26\u8f6c\u6362\uff0c\u53ef\u6709\u6548\u7684\u9632\u6b62xss\u6ce8\u5165\r\nhtmlspecialchars(addslashes(\u53d8\u91cf));\r\n\r\n\/\/\u6e05\u9664\u5b57\u7b26\u4e32\u4e24\u65c1\u7684\u7a7a\u683c\r\ntrim();\r\n\r\n\/\/ \u5411\u6587\u4ef6\u8ffd\u52a0\u5199\u5165\u5185\u5bb9\r\n\/\/ \u4f7f\u7528 FILE_APPEND \u6807\u8bb0\uff0c\u53ef\u4ee5\u5728\u6587\u4ef6\u672b\u5c3e\u8ffd\u52a0\u5185\u5bb9\r\n\/\/ LOCK_EX \u6807\u8bb0\u53ef\u4ee5\u9632\u6b62\u591a\u4eba\u540c\u65f6\u5199\u5165\r\nfile_put_contents(\u6587\u4ef6\u8def\u5f84, \u8981\u5199\u5165\u7684\u5185\u5bb9, FILE_APPEND | LOCK_EX);\r\n\r\n\/\/\u67e5\u8be2\u6570\u7ec4\u91cc\u662f\u5426\u5b58\u5728\u8be5\u952e\u503c\uff0c\u5b58\u5728\u8fd4\u56de\u8be5\u952e\u503c\u7684\u952e\u540d\uff0c\u5982\u679c\u6709\u591a\u4e2a\u5339\u914d\uff0c\u90a3\u4e48\u8fd4\u56de\u6700\u5148\u5339\u914d\u5230\u7684\u952e\u503c\u7684\u952e\u540d\r\n\/\/false\u4ee3\u8868\u4e0d\u9650\u7c7b\u578b\uff0c\u952e\u503c\u6570\u636e\u76f8\u540c\u5373\u53ef\r\n\/\/true\u4ee3\u8868\u5b8c\u5168\u5339\u914d\uff0c\u8981\u6c42\u6570\u636e\u7c7b\u578b\u548c\u952e\u503c\u5b8c\u5168\u76f8\u540c\uff0c\u9ed8\u8ba4\u4e3afalse\r\narray_search("\u952e\u503c", \u6570\u7ec4, false);\r\n\r\n\/\/\u628a\u53d8\u91cf\u8f6c\u6362\u4e3a\u6574\u6570\u7c7b\u578b\uff0c\u5982\u679c\u6709\u5c0f\u6570\uff0c\u5219\u5220\u9664\u5c0f\u6570\uff0c\u4e0d\u6267\u884c\u56db\u820d\u4e94\u5165\r\n\/\/\u5931\u8d25\u6216\u8005\u53d8\u91cf\u4e3a\u7a7a\u65f6\u8fd4\u56de0\uff0c\u5426\u5219\u8fd4\u56de1;\r\nintval();\r\n\r\n\/\/\u5f80\u6570\u7ec4\u5c3e\u90e8\u63d2\u5165\u4e00\u4e2a\u6216\u591a\u4e2a\u5143\u7d20\r\n\/\/\u8fd4\u56de\u65b0\u6570\u7ec4\r\narray_push($a, "\u8981\u63d2\u5165\u7684\u5143\u7d20", "\u8981\u63d2\u5165\u7684\u5143\u7d20");\r\n\r\n\/\/\u628a\u53d8\u91cf\u7c7b\u578b\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7c7b\u578b\r\n\/\/\u8fd4\u56de\u8be5\u5b57\u7b26\u4e32\r\nstrval();\r\n\r\n\/\/ \u67e5\u8be2\u6570\u7ec4\u91cc\u662f\u5426\u5b58\u5728\u8be5\u952e\u503c\uff0c\u5b58\u5728\u8fd4\u56detrue\uff0c\u53cd\u4e4b\u8fd4\u56defalse\r\n\/\/false\u4ee3\u8868\u4e0d\u9650\u7c7b\u578b\uff0c\u952e\u503c\u6570\u636e\u76f8\u540c\u5373\u53ef\r\n\/\/true\u4ee3\u8868\u5b8c\u5168\u5339\u914d\uff0c\u8981\u6c42\u6570\u636e\u7c7b\u578b\u548c\u952e\u503c\u5b8c\u5168\u76f8\u540c\uff0c\u9ed8\u8ba4\u4e3afalse\r\nin_array('\u952e\u503c', \u6570\u7ec4, false);\r\n\r\n\/\/\u65b0\u5efamysql\u670d\u52a1\u5668\u8fde\u63a5\uff0c\u53ef\u7406\u89e3\u4e3a\u65b0\u5efa\u6570\u636e\u5e93\u8fde\u63a5\r\n$mysql = mysqli_connect("ip", "\u7528\u6237\u540d", "\u5bc6\u7801", "\u6570\u636e\u5e93", "\u7aef\u53e3\uff08\u9ed8\u8ba4\u4e3a3306\uff09");\r\n\r\n\/\/\u4fee\u6539\u6570\u636e\u5e93\u8fde\u63a5\u7684\u5b57\u7b26\u96c6\r\nmysqli_set_charset($mysql, "utf8");\r\n\r\n\/\/\u5bf9\u6570\u636e\u5e93\u8fdb\u884csql\u64cd\u4f5c\r\nmysqli_query($mysql, sql\u8bed\u53e5);\r\n\r\n\/\/\u8fd4\u56de\u7ed3\u679c\u96c6\u7684\u4e2d\u884c\u7684\u6570\u91cf\uff0c\u53ef\u7406\u89e3\u4e3a\u8fd4\u56de\u7ed3\u679c\u96c6\u7684\u957f\u5ea6\r\nmysqli_num_rows();\r\n\r\n\/\/\u4ece\u7ed3\u679c\u96c6\u4e2d\u83b7\u53d6\u4e00\u6761\u6570\u636e\uff0c\u5e76\u4f5c\u4e3a\u6570\u7ec4\u8fd4\u56de\r\nmysqli_fetch_row();\r\n\r\n\/\/\u4ee5\u5207\u5272\u7b26\u4e3a\u65ad\u70b9\u5207\u5272\u5b57\u7b26\u4e32\uff0c\u7ec4\u6210\u6570\u7ec4\u5e76\u8fd4\u56de\uff0c\r\n\/\/\u6570\u7ec4\u7684\u6570\u76ee\u4e5f\u5c31\u662f\u957f\u5ea6\r\n\/\/\u5927\u4e8e0\uff0c\u8fd4\u56de\u76f8\u5bf9\u6570\u503c\u7684\u6570\u7ec4\uff0c\u59821\uff0c\u8fd4\u56de\u7684\u6570\u7ec4\u53ea\u6709\u4e00\u4e2a\u5143\u7d20\uff0c 0\u4e5f\u8fd4\u56de\u53ea\u6709\u4e00\u4e2a\u5143\u7d20\u7684\u6570\u7ec4\r\n\/\/\u5c0f\u4e8e0\uff0c\u4ece\u6570\u7ec4\u5c3e\u90e8\u5f00\u59cb\uff0c\u53bb\u9664 \uff08-x\uff09 \u7684\u7edd\u5bf9\u503c\u4e2a\u5143\u7d20\uff0c\u8fd4\u56de\r\nexplode("\u5206\u5272\u7b26", \u53d8\u91cf, \u8fd4\u56de\u6570\u7ec4\u5143\u7d20\u7684\u6570\u76ee);\r\n\r\n\/\/\u628a\u6570\u7ec4\u91cc\u7684\u5143\u7d20\u6253\u4e71\u968f\u673a\u6392\u5e8f\r\nshuffle();\r\n\r\n\/\/\u622a\u53d6\u4fdd\u7559\u7ed3\u679c\u96c6\u7684\u7b2c n \u6761\u6570\u636e\uff0c\u5176\u4ed6\u5220\u9664\uff0c\u5e76\u8fd4\u56de\r\n\/\/n\u4e3a0\u65f6\u622a\u53d6\u7b2c\u4e00\u6761\uff0c\u4e3a1\u65f6\u622a\u53d6\u7b2c\u4e8c\u6761\uff0c\u4ee5\u6b64\u7c7b\u63a8\uff0cn\u4e3a-1\u65f6\u622a\u53d6\u6700\u540e\u4e00\u6761\r\nmysqli_data_seek($xx, n);\r\n\r\n\/\/\u5c06\u6570\u7ec4\u8f6c\u4e3ajson\u683c\u5f0f\r\njson_encode();\r\n\r\n\/\/\u5c06json\u683c\u5f0f\u8f6c\u4e3a\u6570\u7ec4\u5bf9\u8c61\r\njson_decode($xxx);\r\n\r\n\/\/\u68c0\u6d4b\u53d8\u91cf\u662f\u5426\u4e3a\u6570\u5b57\uff0c\u8fd4\u56de true false\r\nis_numeric(\u53d8\u91cf);\r\n\r\n\/\/\u5c06json\u683c\u5f0f\u8f6c\u4e3a\u6570\u7ec4\r\njson_decode($xxx, true);\r\n\r\n\/\/\u6e05\u9664\u6307\u5b9a\u7684\u53d8\u91cf\r\nunset($a);\r\n\r\n\/\/\u5b57\u7b26\u4e32\u66ff\u6362\u6307\u5b9a\u503c\r\n\/\/\u641c\u7d22$pic\u5b57\u7b26\u4e32\u91cc\u7684\\\u7b26\u53f7\uff0c\u5168\u90e8\u66ff\u6362\u6210\/\r\nstr_replace("\\\\", "\/", $pic);\r\n\r\n\/\/\u8bbe\u7f6e\u65f6\u533a PRC\u4e3a\u4e2d\u56fd\u65f6\u533a\r\ndate_default_timezone_set("PRC");\r\n\r\n\/\/\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\r\ndate('Y-m-d H:i:s', time());\r\n\r\n\/\/\u83b7\u53d6\u5f53\u524d0\u70b9\u7684\u65f6\u95f4\u6233\r\nstrtotime(date("Y-m-d"), time());\r\n\r\n\/\/\u4e0b\u4e2a\u6708\u73b0\u5728\u7684\u65f6\u95f4\u6233\r\nstrtotime('+1 month');\r\n\r\n\/\/\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\u6233\r\ntime();\r\n\r\n\/\/\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\u7684\u5fae\u79d2\r\nmicrotime();\r\n\r\n\/\/\u628a\u65e5\u671f\u65f6\u95f4\u8f6c\u6362\u6210\u65f6\u95f4\u6233\r\nstrtotime();\r\n\/\/\u4f8b\uff1astrtotime("2021-11-21 00:00:00");\r\n\r\n\/\/\u68c0\u67e5\u53d8\u91cf\u662f\u5426\u5b58\u5728\r\nisset();\r\n\r\n\/\/\u68c0\u67e5\u5f53\u524d\u6587\u4ef6\u662f\u5426\u5b58\u5728\r\nfile_exists();\r\n\r\n\/\/\u5ef6\u8fdf\u4e0b\u9762\u7684\u7a0b\u5e8f\u6267\u884c\uff0c1\u4e3a\u5ef6\u8fdf\u4e00\u79d2\u540e\u518d\u6267\u884c\u540e\u9762\u7684\u7a0b\u5e8f\r\nsleep(1);\r\n\r\n\/\/\u521b\u5efa\u76ee\u5f55\uff0c\u5e76\u4e14\u8bbe\u7f6e\u6700\u9ad8\u6743\u9650\r\nmkdir(\u76ee\u5f55\u540d\u79f0, 0700, true);\r\n\r\n\/\/\u521b\u5efa\u4e00\u4e2a0\u5230100\u7684\u968f\u673a\u6570\r\nmt_rand(0, 100);\r\nrand(0,100);\r\n\r\n\/\/\u6839\u636e\u9700\u6c42\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\u5982\uff1a\r\nrange(0, 100);\r\n\/\/\u7ed3\u679c Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 3 ... [100] => 100 );\r\n\r\n\/\/\u9996\u5b57\u6bcd\u8f6c\u6362\u4e3a\u5927\u5199\r\nucwords();\r\n\r\n\/\/\u8fd4\u56de\u5f53\u524d\u5185\u5b58\u6d88\u8017\u91cf\r\nmemory_get_usage();\r\n\r\n\/\/\u83b7\u53d6\u4e00\u4e2a\u6570\u7ec4\u7684\u5168\u90e8\u952e\u540d\r\narray_keys(\u6570\u7ec4);\r\n\r\n\/\/\u83b7\u53d6\u4e00\u4e2a\u6570\u7ec4\u7684\u5168\u90e8\u5065\u503c\r\narray_values(\u6570\u7ec4);\r\n\r\n\/\/php\u5f15\u5165php\u6587\u4ef6\r\nrequire()\u3001include()\u3001require_once()\u3001include_once()\r\n\/\/require\u548cinclude\u76f8\u540c\u70b9\uff1a\u90fd\u662f\u5f15\u5165\u5e76\u6267\u884c\u6587\u4ef6\r\n\/\/require\u548cinclude\u4e0d\u540c\u70b9\uff1a\r\n\/\/require\u4e00\u822c\u53ea\u4f1a\u653e\u5728PHP\u811a\u672c\u6700\u524d\u9762\u8fdb\u884c\u4f7f\u7528\uff0c\u56e0\u4e3a\u5b83\u4f1a\u5148\u884c\u6267\u884c\u6587\u4ef6\uff0c\u9700\u7b49\u5f85require\u5f15\u5165\u7684\u6587\u4ef6\u6267\u884c\u5b8c\u6210\u65b9\u53ef\u7ee7\u7eed\u6267\u884c\u4e0b\u53bb\uff0c\u5982\u679crequire\u6267\u884c\u6587\u4ef6\u65f6\u51fa\u73b0\u9519\u8bef\uff0c\u5219\u4f1a\u8fd4\u56de\u4e00\u4e2a\u81f4\u547d\u9519\u8bef\uff0c\u5e76\u5e26\u6389\u7a0b\u5e8f\u3002\r\n\/\/include\u4e00\u822c\u662f\u653e\u5728\u811a\u672c\u4e2d\u95f4\u8fdb\u884c\u4f7f\u7528\uff0c\u56e0\u4e3a\u5b83\u4e0d\u4f1a\u5148\u884c\u6267\u884c\uff0c\u53ea\u4f1a\u5728\u7528\u5230\u7684\u65f6\u5019\u518d\u6267\u884c\u52a0\u8f7d\uff0c\u5982\u679cinclude\u5f15\u5165\u7684\u6587\u4ef6\u6267\u884c\u9519\u8bef\uff0c\u4e0d\u4f1a\u5e26\u6389\u7a0b\u5e8f\uff0c\u53ea\u4f1a\u8fd4\u56de\u4e00\u4e2a\u8b66\u544a\uff0c\u7136\u540e\u7a0b\u5e8f\u7ee7\u7eed\u6267\u884c\u4e0b\u53bb\r\n\/\/\u800crequire_once()\u548cinclude_once()\u5219\u8ddfrequire\u548cinclude\u4e00\u6837\uff0c\u552f\u4e00\u591a\u51fa\u7684\u4e00\u70b9\u5c5e\u6027\u5c31\u662f\uff1a\u68c0\u6d4b\u6587\u4ef6\u662f\u5426\u5df2\u7ecf\u52a0\u8f7d\u8fc7\uff0c\u5982\u679c\u5df2\u7ecf\u52a0\u8f7d\u8fc7\u4e86\uff0c\u5c31\u4e0d\u518d\u8fdb\u884c\u52a0\u8f7d\u4e86\r\n\r\n\/\/\u68c0\u6d4bip\u662f\u5426\u5408\u6cd5\r\nlong2ip()\u548cip2long()\r\n\/\/ip2long()\uff1a\u628aip\u8f6c\u6362\u6210\u4e3a\u6574\u5f62\uff0c\u5982\uff1a2130706433\uff0c\u5982\u679cip\u4e0d\u662f\u5408\u6cd5ip\u5219\u8fd4\u56de\u7a7a\r\n\/\/long2ip()\uff1a\u628a\u6574\u5f62\u8f6c\u6362\u4e3aip\uff0c\u5982\u679c\u6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