{"id":86,"date":"2020-11-10T22:58:34","date_gmt":"2020-11-10T14:58:34","guid":{"rendered":"http:\/\/9iwd.top\/?p=86"},"modified":"2020-11-10T22:58:34","modified_gmt":"2020-11-10T14:58:34","slug":"no-22-%e4%ba%86%e8%a7%a3%e9%94%99%e8%af%af%e4%bb%a5%e5%8f%8a%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"http:\/\/9iwd.top\/?p=86","title":{"rendered":"No.22 \u4e86\u89e3\u9519\u8bef\u4ee5\u53ca\u5904\u7406"},"content":{"rendered":"\n
\t#\u9519\u8bef\u5904\u7406\n\/*\n\u9519\u8bef\u5904\u7406\uff1a\u6307\u7684\u662f\u7cfb\u7edf(\u6216\u8005\u7528\u6237)\u5728\u5bf9\u67d0\u4e9b\u4ee3\u7801\u8fdb\u884c\u6267\u884c\u7684\u65f6\u5019\uff0c\u53d1\u73b0\u6709\u9519\u8bef\uff0c\u5c31\u4f1a\u901a\u8fc7\u9519\u8bef\u5904\u7406\u7684\u5f62\u5f0f\u544a\u77e5\u7a0b\u5e8f\u5458\u3002\n\n<\/code><\/pre>\n\n\n\n
\t#\u9519\u8bef\u5206\u7c7b\n1)\u8bed\u6cd5\u9519\u8bef\uff1a\u7528\u6237\u4e66\u5199\u7684\u4ee3\u7801\u4e0d\u7b26\u5408 PHP \u7684\u8bed\u6cd5\u89c4\u8303\uff0c\u8bed\u6cd5\u9519\u8bef\u4f1a\u5bfc\u81f4\u4ee3\u7801\u5728\u7f16\u8bd1\u7684\u8fc7\u7a0b\u4e2d\u4e0d\u901a\u8fc7\uff0c\u6240\u4ee5\u4ee3\u7801\u4e0d\u4f1a\u6267\u884c(parse error)\n2)\u8fd0\u884c\u662f\u9519\u8bef\uff1a\u4ee3\u7801\u7f16\u8bd1\u901a\u8fc7\uff0c\u4f46\u662f\u4ee3\u7801\u5728\u6267\u884c\u7684\u8fc7\u7a0b\u4e2d\u4f1a\u51fa\u73b0\u4e00\u4e9b\u6761\u4ef6\u4e0d\u5988\u7956\u5bfc\u81f4\u7684\u9519\u8bef(runtime error)\n3)\u903b\u8f91\u9519\u8bef\uff1a\u7a0b\u5e8f\u5458\u5728\u5199\u4ee3\u7801\u7684\u65f6\u5019\u4e0d\u591f\u89c4\u8303\uff0c\u51fa\u73b0\u4e86\u4e00\u4e9b\u903b\u8f91\u6027\u7684\u9519\u8bef\uff0c\u5bfc\u81f4\u4ee3\u7801\u6267\u884c\uff0c\u4f46\u662f\u5f97\u4e0d\u5230\u60f3\u8981\u7684\u7ed3\u679c\n\n<\/code><\/pre>\n\n\n\n
\t#\u9519\u8bef\u4ee3\u53f7\n\u6240\u6709\u770b\u5230\u7684\u9519\u8bef\u4ee3\u7801\u5728PHP\u4e2d\u90fd\u88ab\u5b9a\u4e49\u6210\u4e86\u7cfb\u7edf\u5e38\u91cf\uff08\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\uff09\n1\uff09\u7cfb\u7edf\u9519\u8bef:\nE_PARSE:\u7f16\u8bd1\u9519\u8bef\uff0c\u4ee3\u7801\u4e0d\u4f1a\u6267\u884c\u3002\nE_ERROR: fatal error\uff0c\u81f4\u547d\u9519\u8bef\uff0c\u4f1a\u5bfc\u81f4\u4ee3\u7801\u4e0d\u80fd\u6b63\u786e\u7ee7\u7eed\u6267\u884c\uff08\u51fa\u9519\u7684\u4f4d\u7f6e\u65ad\u6389)\nE_WARNING: warning\uff0c\u8b66\u544a\u9519\u8bef\uff0c\u4e0d\u4f1a\u5f71\u54cd\u4ee3\u7801\u6267\u884c\uff0c\u4f46\u662f\u53ef\u80fd\u5f97\u5230\u610f\u60f3\u4e0d\u5230\u7684\u7ed3\u679c\nE_NOTICE: notice\uff0c\u901a\u77e5\u9519\u8bef\uff0c\u4e0d\u4f1a\u5f71\u54cd\u4ee3\u7801\u6267\u884c\n\n2\uff09\u7528\u6237\u9519\u8bef:E_USER_ERROR\uff0cE_USER_WARNING\uff0cE_USER_NOTICE\n\u7528\u6237\u5728\u4f7f\u7528\u81ea\u5b9a\u4e49\u9519\u8bef\u89e6\u53d1\u7684\u65f6\u5019\uff0c\u4f1a\u4f7f\u7528\u5230\u7684\u9519\u8bef\u4ee3\u53f7\uff08\u7cfb\u7edf\u4e0d\u4f1a\u7528\u5230)\n\n3\uff09\u5176\u4ed6:E_ALL\uff0c\u4ee3\u8868\u7740\u6240\u6709\u4ece\u9519\u8bef\uff08\u901a\u5e38\u5728\u8fdb\u884c\u9519\u8bef\u63a7\u5236\u7684\u65f6\u5019\u4f7f\u7528\u6bd4\u8f83\u591a)\uff0c\u5efa\u8bae\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\uff08\u5f00\u53d1\u73af\u5883\uff09\u4f7f\u7528\u3002\n\n\u6240\u6709\u4ee5E\u5f00\u5934\u7684\u9519\u8bef\u5e38\u91cf(\u4ee3\u53f7\uff09\u5176\u5b9e\u90fd\u662f\u7531\u4e00\u4e2a\u5b57\u8282\u5b58\u50a8\uff0c\u7136\u540e\u6bcf\u4e00\u79cd\u9519\u8bef\u5360\u636e\u4e00\u4e2a\u5bf9\u5e94\u7684\u4f4d\uff0c\u5982\u679c\u60f3\u8fdb\u884c\u4e00\u4e9b\u9519\u8bef\u7684\u63a7\u5236\uff0c\u53ef\u4ee5\u4f7f\u7528\u4f4d\u8fd0\u7b97\u8fdb\u884c\u64cd\u4f5c,\n\u6392\u9664\u901a\u77e5\u7ea7\u522bnotice: E_ALL &~E_NOTICE\n\u53ea\u8981\u8b66\u544a\u548c\u901a\u77e5:E_WARNING | E_NOTICE\n*\/\n\n<\/code><\/pre>\n\n\n\n
\t#\u9519\u8bef\u89e6\u53d1\n\/\/\u7cfb\u7edf\u89e6\u53d1\uff1a\n$a = 100;\t\t\/\/\u56e0\u4e3a\u8fd9\u91cc\u6f0f\u4e86;\u6240\u4ee5\u4e0b\u9762\u6253\u5370\u8f93\u51fa\u624d\u4f1a\u62a5\u9519\necho $a;\t\t\/\/Parse error: syntax error, unexpected 'echo' (T_ECHO) in\n\n\/\/\u4eba\u4e3a\u89e6\u53d1\n$b=0;\nif($b==0){\n\t\/\/\u4eba\u4e3a\u89e6\u53d1\u9519\u8bef\n\ttrigger_error('\u9664\u6570\u4e0d\u80fd\u4e3a0\uff01');\n\ttrigger_error('\u9664\u6570\u4e0d\u80fd\u4e3a0\uff01',E_USER_ERROR);\t\/\/\u53ef\u4ee5\u4f7f\u7528\u7b2c\u4e8c\u53c2\u6570\u8bbe\u5b9a\u7ea7\u522b\uff0c\u51b3\u5b9a\u662f\u5426\u5f80\u4e0b\u6267\u884c\u3002\n}\necho '\u4f60\u597dPHP';\n\n<\/code><\/pre>\n\n\n\n
\t#\u9519\u8bef\u663e\u793a\u8bbe\u7f6e\n\/*\n\u9519\u8bef\u663e\u793a\u8bbe\u7f6e:\u54ea\u4e9b\u9519\u8bef\u8be5\u663e\u793a\uff0c\u4ee5\u53ca\u8be5\u5982\u4f55\u663e\u793a\n\u5728PHP\u4e2d\uff0c\u5176\u5b9e\u6709\u4e24\u79cd\u65b9\u5f0f\u6765\u8bbe\u7f6e\u5f53\u524d\u811a\u672c\u7684\u9519\u8bef\u5904\u7406\n1\u3001PHP\u7684\u914d\u7f6e\u6587\u4ef6:\u5168\u5c40\u914d\u7f6e:php.ini\u6587\u4ef6\ndisplay_errors:\u662f\u5426\u663e\u793a\u9519\u8bef(on\/1 \u5f00\u542f\uff1boff\/0 \u5173\u95ed)\nerror_reporting:\u663e\u793a\u4ec0\u4e48\u7ea7\u522b\u7684\u9519\u8bef\n\n2\u3001\u53ef\u4ee5\u5728\u8fd0\u884c\u7684 PHP \u811a\u672c\u4e2d\u8bbe\u7f6e\nerror_reporting(E_ALL ^ E_NOTICE);\t\t\u811a\u672c\u4e2d\u8bbe\u7f6e\u7684\u6743\u9650\u9ad8\u4e8e\u914d\u7f6e\u8bbe\u7f6e\nini_set('\u914d\u7f6e\u9879\u76ee', \u914d\u7f6e\u503c);\nini_set('error_reporting', E_ALL);\nini_set('display_errors', 1);\n*\/\n\n<\/code><\/pre>\n\n\n\n
\t#\u9519\u8bef\u65e5\u5fd7\u8bbe\u7f6e\n\/*\n\u5728\u5b9e\u9645\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u4e0d\u4f1a\u76f4\u63a5\u8ba9\u9519\u8bef\u8d64\u88f8\u88f8\u7684\u5c55\u793a\u7ed9\u7528\u6237:\n1\u3001\u4e0d\u53cb\u597d\n2\u3001\u4e0d\u5b89\u5168:\u9519\u8bef\u4f1a\u66b4\u9732\u7f51\u7ad9\u5f88\u591a\u4fe1\u606f(\u8def\u5f84\u3001\u6587\u4ef6\u540d\uff09\n\u6240\u4ee5\u5728\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u4e00\u822c\u4e0d\u663e\u793a\u9519\u8bef\uff08\u9519\u8bef\u4e5f\u6bd4\u8f83\u5c11)\uff0c\u4f46\u662f\u4e0d\u53ef\u80fd\u907f\u514d\u4f1a\u51fa\u73b0\u9519\u8bef\uff08\u6d4b\u8bd5\u7684\u65f6\u5019\u4e0d\u4f1a\u53d1\u73b0\u6240\u6709\u7684\u95ee\u9898)\uff0c\u8fd9\u4e2a\u65f6\u5019\u4e0d\u5e0c\u671b\u770b\u5230\uff0c\u4f46\u662f\u53c8\u5e0c\u671b\u6355\u6349\u5230\u53ef\u4ee5\u8ba9\u540e\u53f0\u7a0b\u5e8f\u5458\u53bb\u4fee\u6539\uff1a\u9700\u8981\u4fdd\u5b58\u5230\u65e5\u5fd7\u6587\u4ef6\u4e2d\uff0c\u9700\u8981\u5728 PHP \u914d\u7f6e\u6587\u4ef6\u4e2d\u6216\u8005\u4ee3\u7801\u4e2d(ini_set)\u8bbe\u7f6e\u5bf9\u5e94\u7684 error_log \u7684\u914d\u7f6e\u9879\u5904\u7406\n\n1)\u5f00\u542f\u529f\u80fd\nlog_errors=On\t\t\/\/(on\/1 \u5f00\u542f\uff1boff\/0 \u5173\u95ed)\n\n2)\u6307\u5b9a\u8def\u5f84\nerror_log=D:\/Extensions\/php\/php5.4.45nts.log\n*\/\n\n<\/code><\/pre>\n\n\n\n
\t#\u81ea\u5b9a\u4e49\u9519\u8bef\u5904\u7406\n\/*\n\u6700\u7b80\u5355\u7684\u9519\u8bef\u5904\u7406:trigger_errors()\u51fd\u6570\uff0c\u4f46\u662f\u8be5\u51fd\u6570\u4e0d\u4f1a\u963b\u6b62\u7cfb\u7edf\u62a5\u9519\nPHP\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e00\u79cd\u7528\u6237\u5904\u7406\u9519\u8bef\u7684\u673a\u5236:\u7528\u6237\u81ea\u5b9a\u4e49\u9519\u8bef\u5904\u7406\u51fd\u6570\uff0c\u7136\u540e\u5c06\u8be5\u51fd\u6570\u589e\u52a0\u64cd\u7cfb\u7edf\u9519\u8bef\u5904\u7406\u7684\u53e5\u67c4\u4e2d\uff0c\u7136\u540e\u7cfb\u7edf\u4f1a\u5728\u78b0\u5230\u9519\u8bef\u4e4b\u540e\uff0c\u4f7f\u7528\u7528\u6237\u5b9a\u4e49\u7684\u9519\u8bef\u51fd\u6570\u3002\n\n1\u3001\u5982\u4f55\u5c06\u7528\u6237\u81ea\u5b9a\u4e49\u7684\u51fd\u6570\u653e\u5230\u7cfb\u7edf\u4e2d? set_error_handler()\n*\/\nfunction my_error($errno, $errstr, $errfile, $errcontext){\n\tif(!(error_reporting() & $errno)){\n\t\treturn false;\n\t}\n\t$msg = <<<EOD\n\t\u9519\u8bef\u7b49\u7ea7\uff1a$errno <br\/>\n\t\u9519\u8bef\u539f\u56e0\uff1a$errstr <br\/>\n\t\u9519\u8bef\u6587\u4ef6\uff1a$errfile <br\/>\n\t\u9519\u8bef\u884c\u6570\uff1a$errcontext <br\/>\nEOD;\n\t\/\/echo $msg;\n\tswitch($errno){\n\t\tcase E_ERROR:\n\t\tcase E_USER_ERROR:\n\t\t\t$msg = <<<EOD\n\t\t\t\u9519\u8bef\u7b49\u7ea7\uff1aERROR \u81f4\u547d\u9519\u8bef <br\/>\n\t\t\t\u9519\u8bef\u539f\u56e0\uff1a$errstr <br\/>\n\t\t\t\u9519\u8bef\u6587\u4ef6\uff1a$errfile <br\/>\n\t\t\t\u9519\u8bef\u884c\u6570\uff1a$errcontext <br\/>\nEOD;\n\t\t\tbreak;\n\t\tcase E_WARNING:\n\t\tcase E_USER_WARNING:\n\t\t\t$msg = <<<EOD\n\t\t\t\u9519\u8bef\u7b49\u7ea7\uff1aWARNING \u8b66\u544a\u9519\u8bef <br\/>\n\t\t\t\u9519\u8bef\u539f\u56e0\uff1a$errstr <br\/>\n\t\t\t\u9519\u8bef\u6587\u4ef6\uff1a$errfile <br\/>\n\t\t\t\u9519\u8bef\u884c\u6570\uff1a$errcontext <br\/>\nEOD;\n\t\t\tbreak;\n\t\tcase E_NOTICE:\n\t\tcase E_USER_NOTICE:\n\t\t\t$msg = <<<EOD\n\t\t\t\u9519\u8bef\u7b49\u7ea7\uff1aNOTICE \u901a\u77e5\u9519\u8bef <br\/>\n\t\t\t\u9519\u8bef\u539f\u56e0\uff1a$errstr <br\/>\n\t\t\t\u9519\u8bef\u6587\u4ef6\uff1a$errfile <br\/>\n\t\t\t\u9519\u8bef\u884c\u6570\uff1a$errcontext <br\/>\nEOD;\n\t\t\tbreak;\n\t}\n\techo $msg;\n\treturn true;\n}\nset_error_handler('my_error');\n\n$a=222;\necho $b;\n\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"_links":{"self":[{"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/posts\/86"}],"collection":[{"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=86"}],"version-history":[{"count":0,"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/posts\/86\/revisions"}],"wp:attachment":[{"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=86"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=86"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=86"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}