{"id":31452,"date":"2024-11-25T15:44:33","date_gmt":"2024-11-25T07:44:33","guid":{"rendered":"https:\/\/fwq.ai\/blog\/31452\/"},"modified":"2024-11-25T15:44:33","modified_gmt":"2024-11-25T07:44:33","slug":"php%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e6%96%87%e4%bb%b6%e9%94%81%e8%a7%a3%e5%86%b3%e9%ab%98%e5%b9%b6%e5%8f%91%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/31452\/","title":{"rendered":"PHP\u5982\u4f55\u4f7f\u7528\u6587\u4ef6\u9501\u89e3\u51b3\u9ad8\u5e76\u53d1\u95ee\u9898"},"content":{"rendered":"

\u672c\u6587\u4e3b\u8981\u548c\u5927\u5bb6\u4ecb\u7ecd\u4e86php\u4f7f\u7528\u6587\u4ef6\u9501\u89e3\u51b3\u9ad8\u5e76\u53d1\u95ee\u9898,\u7ed3\u5408\u5b9e\u4f8b\u5f62\u5f0f\u5206\u6790\u4e86php\u963b\u585e\u6a21\u5f0f\u4e0e\u975e\u963b\u585e\u6a21\u5f0f\u6587\u4ef6\u9501\u89e3\u51b3\u9ad8\u5e76\u53d1\u7684\u76f8\u5173\u4f7f\u7528\u6280\u5de7,\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e0b\uff0c\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\u3002<\/p>\n

\u65b0\u5efa\u4e00\u4e2a.txt\u6587\u4ef6\uff0c\u6587\u4ef6\u4e2d\u4ec0\u4e48\u90fd\u4e0d\u7528\u5199\u3002<\/p>\n

\u3010\u4e00\u3011.\u963b\u585e(\u7b49\u5f85)\u6a21\u5f0f<\/strong><\/span>\uff1a(\u53ea\u8981\u6709\u5176\u4ed6\u8fdb\u7a0b\u5df2\u7ecf\u52a0\u9501\u6587\u4ef6,\u5f53\u524d\u8fdb\u7a0b\u4f1a\u4e00\u76f4\u7b49\u5176\u4ed6\u8fdb\u7a0b\u89e3\u9501\u6587\u4ef6<\/span>)<\/p>\n

<\/p>\n

<?php \/\/\u8fde\u63a5\u6570\u636e\u5e93\r\n$con=mysqli_connect(\"192.168.2.186\",\"root\",\"root\",\"test\");\r\n\/\/\u67e5\u8be2\u5546\u54c1\u6570\u91cf\u662f\u5426\u5927\u4e8e0,\u5927\u4e8e0\u624d\u80fd\u4e0b\u5355,\u5e76\u51cf\u5c11\u5e93\u5b58\r\n$fp = fopen(\"lock.txt\", \"r\");\r\n\/\/\u52a0\u9501\r\nif(flock($fp,LOCK_EX))\r\n{\r\n  $res=mysqli_fetch_assoc(mysqli_query($con,'SELECT total FROM shop WHERE id=1 LIMIT 1'));\r\n  if($res['total']>0){mysqli_query($con,'UPDATE shop SET total=total-1 WHERE id=1');}\r\n  \/\/\u6267\u884c\u5b8c\u6210\u89e3\u9501\r\n  flock($fp,LOCK_UN);\r\n}\r\n\/\/\u5173\u95ed\u6587\u4ef6\r\nfclose($fp);\r\nunset($res);\r\nmysqli_close($con);\r\n?&gt;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u3010\u4e8c\u3011.\u975e\u963b\u585e(\u7b49\u5f85)\u6a21\u5f0f<\/strong><\/span>\uff1a(\u53ea\u8981\u6709\u5176\u4ed6\u8fdb\u7a0b\u5df2\u7ecf\u52a0\u9501\u6587\u4ef6,\u5f53\u524d\u8fdb\u7a0b\u4e0d\u4f1a\u7b49\u5176\u4ed6\u8fdb\u7a0b\u89e3\u9501\u6587\u4ef6\u76f4\u63a5\u8fd4\u56de<\/span>)<\/p>\n
<\/p>\n
<?php \/\/\u8fde\u63a5\u6570\u636e\u5e93\r\n$con=mysqli_connect(\"192.168.2.186\",\"root\",\"root\",\"test\");\r\n\/\/\u67e5\u8be2\u5546\u54c1\u6570\u91cf\u662f\u5426\u5927\u4e8e0,\u5927\u4e8e0\u624d\u80fd\u4e0b\u5355,\u5e76\u51cf\u5c11\u5e93\u5b58\r\n$fp = fopen(\"lock.txt\", \"r\");\r\n\/\/\u52a0\u9501\r\nif(flock($fp,LOCK_EX | LOCK_NB))\r\n{\r\n  $res=mysqli_fetch_assoc(mysqli_query($con,'SELECT total FROM shop WHERE id=1 LIMIT 1'));\r\n  if($res['total']>0){mysqli_query($con,'UPDATE shop SET total=total-1 WHERE id=1');}\r\n  \/\/\u6267\u884c\u5b8c\u6210\u89e3\u9501\r\n  flock($fp,LOCK_UN);\r\n}\r\n\/\/\u5173\u95ed\u6587\u4ef6\r\nfclose($fp);\r\nunset($res);\r\nmysqli_close($con);\r\n?&gt;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5982\u679c\u8fde\u63a5\u6570\u636e\u5e93\u8d39\u65f6\u95f4\u7684\u8bdd\uff0c\u4e0b\u9762\u6709\u4e2a\u7b80\u5355\u7684\u5c0fdemo\uff0c\u53ef\u4ee5\u66f4\u76f4\u89c2\u7684\u7406\u89e3\u4e0b\u3002<\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
demo.php<\/p>\n
<\/p>\n
<?php $fp = fopen(\"file_lock.txt\", \"r\");\r\n\/\/ \u52a0\u9501\r\nif(flock($fp, LOCK_EX))\r\n{\r\n  sleep(10);\r\n  echo 1;\r\n  \/\/\u6267\u884c\u5b8c\u6210\u89e3\u9501\r\n  flock($fp,LOCK_UN);\r\n} else {\r\n  echo 2;\r\n}\r\n\/\/\u5173\u95ed\u6587\u4ef6\r\nfclose($fp);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
demo2.php<\/p>\n
<\/p>\n
<?php $fp = fopen(\"file_lock.txt\", \"r\");\r\n\/\/ \u52a0\u9501\uff08\u5982\u679c\u6539\u6210flock($fp, LOCK_EX | LOCK_NB)\uff0cdemo2.php\u4f1a\u76f4\u63a5\u8fd4\u56de2\uff0c\u5426\u5219\u4f1a\u7b49\u5f85demo.php\u6267\u884c\u5b8c\u8fd4\u56de1\uff09\r\nif(flock($fp, LOCK_EX))\r\n{\r\n  echo 1;\r\n} else {\r\n  echo 2;\r\n}\r\n\/\/\u5173\u95ed\u6587\u4ef6\r\nfclose($fp);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u540c\u65f6\u8fd0\u884c\u4e24\u4e2a\u6587\u4ef6\uff0c\u7136\u540e\u4fee\u6539demo2\u4e2d\u52a0\u9501\u673a\u5236\uff0c\u5c31\u53ef\u4ee5\u770b\u51fa\u6765\u963b\u585e\uff08\u7b49\u5f85\uff09\u6a21\u5f0f\u548c\u975e\u963b\u585e\uff08\u7b49\u5f85\uff09\u6a21\u5f0f\u7684\u533a\u522b\u4e86\u3002<\/p>\n
\u4f46\u662f\u8fd9\u6837\u4f1a\u5bfc\u81f4\u961f\u5217\u5835\u585e\uff0c\u5047\u598210\u4e2a\u4eba\u540c\u4e00\u79d2\u5199\u5165\u6570\u636e\u5e93\uff0c\u90a3\u5c31\u5835\u585e\u4e86\uff0c\u7b2c10\u4e2a\u4eba\u4f1a\u7b49\u5f85\u524d9\u4e2a\u90fd\u6267\u884c\u5b8c\u624d\u4f1a\u6267\u884c\uff01<\/p>\n
<\/p>\n
<\/span><\/p>\n
\u4ee5\u4e0a\u5c31\u662fPHP\u5982\u4f55\u4f7f\u7528\u6587\u4ef6\u9501\u89e3\u51b3\u9ad8\u5e76\u53d1\u95ee\u9898\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u672c\u6587\u4e3b\u8981\u548c\u5927\u5bb6\u4ecb\u7ecd\u4e86php\u4f7f\u7528\u6587\u4ef6\u9501\u89e3\u51b3\u9ad8\u5e76\u53d1\u95ee\u9898,\u7ed3\u5408\u5b9e\u4f8b\u5f62\u5f0f\u5206\u6790\u4e86php\u963b\u585e\u6a21\u5f0f\u4e0e\u975e\u963b\u585e\u6a21\u5f0f\u6587\u4ef6\u9501\u89e3\u51b3\u9ad8\u5e76\u53d1\u7684\u76f8\u5173\u4f7f\u7528\u6280\u5de7,\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e0b\uff0c\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\u3002 \u65b0\u5efa\u4e00\u4e2a.txt\u6587\u4ef6\uff0c\u6587\u4ef6\u4e2d\u4ec0\u4e48\u90fd\u4e0d\u7528\u5199\u3002 \u3010\u4e00\u3011.\u963b\u585e(\u7b49\u5f85)\u6a21\u5f0f\uff1a(\u53ea\u8981\u6709\u5176\u4ed6\u8fdb\u7a0b\u5df2\u7ecf\u52a0\u9501\u6587\u4ef6,\u5f53\u524d\u8fdb\u7a0b\u4f1a\u4e00\u76f4\u7b49\u5176\u4ed6\u8fdb\u7a0b\u89e3\u9501\u6587\u4ef6) <?php \/\/\u8fde\u63a5\u6570\u636e\u5e93 $con=mysqli_connect(“192.168.2.186″,”root”,”root”,”test”); \/\/\u67e5\u8be2\u5546\u54c1\u6570\u91cf\u662f\u5426\u5927\u4e8e0,\u5927\u4e8e0\u624d\u80fd\u4e0b\u5355,\u5e76\u51cf\u5c11\u5e93\u5b58 $fp = fopen(“lock.txt”, “r”); \/\/\u52a0\u9501 if(flock($fp,LOCK_EX)) { $res=mysqli_fetch_assoc(mysqli_query($con,'SELECT total FROM shop WHERE id=1 LIMIT 1')); if($res['total']>0){mysqli_query($con,’UPDATE shop SET total=total-1 WHERE id=1′);}   \/\/\u6267\u884c\u5b8c\u6210\u89e3\u9501   flock($fp,LOCK_UN); } \/\/\u5173\u95ed\u6587\u4ef6 fclose($fp); unset($res); mysqli_close($con); ?&gt; \u767b\u5f55\u540e\u590d\u5236 \u3010\u4e8c\u3011.\u975e\u963b\u585e(\u7b49\u5f85)\u6a21\u5f0f\uff1a(\u53ea\u8981\u6709\u5176\u4ed6\u8fdb\u7a0b\u5df2\u7ecf\u52a0\u9501\u6587\u4ef6,\u5f53\u524d\u8fdb\u7a0b\u4e0d\u4f1a\u7b49\u5176\u4ed6\u8fdb\u7a0b\u89e3\u9501\u6587\u4ef6\u76f4\u63a5\u8fd4\u56de) <?php \/\/\u8fde\u63a5\u6570\u636e\u5e93 $con=mysqli_connect(“192.168.2.186″,”root”,”root”,”test”); \/\/\u67e5\u8be2\u5546\u54c1\u6570\u91cf\u662f\u5426\u5927\u4e8e0,\u5927\u4e8e0\u624d\u80fd\u4e0b\u5355,\u5e76\u51cf\u5c11\u5e93\u5b58 $fp = fopen(“lock.txt”, “r”); \/\/\u52a0\u9501 if(flock($fp,LOCK_EX | LOCK_NB)) { $res=mysqli_fetch_assoc(mysqli_query($con,'SELECT total FROM shop WHERE id=1 LIMIT 1')); if($res['total']>0){mysqli_query($con,’UPDATE shop SET total=total-1 WHERE id=1′);} […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"class_list":["post-31452","post","type-post","status-publish","format-standard","hentry","category-19"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/31452","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=31452"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/31452\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=31452"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=31452"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=31452"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}