{"id":91,"date":"2020-11-11T00:28:40","date_gmt":"2020-11-10T16:28:40","guid":{"rendered":"http:\/\/9iwd.top\/?p=91"},"modified":"2020-11-11T00:28:40","modified_gmt":"2020-11-10T16:28:40","slug":"no-23-%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%ae%9a%e4%b9%89%e4%bb%a5%e5%8f%8a%e8%bd%ac%e4%b9%89","status":"publish","type":"post","link":"http:\/\/9iwd.top\/?p=91","title":{"rendered":"No.23 \u5b57\u7b26\u4e32\u5b9a\u4e49\u4ee5\u53ca\u8f6c\u4e49"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>\/\/\u5b9a\u4e49\u5355\u5f15\u53f7\u548c\u53cc\u5f15\u53f7\u5b57\u7b26\u4e32\n$a1 = '\u4f60\u597d\uff01';\n$a2 = \"\u4f60\u597d\uff01\";\nvar_dump($a1,$a2);\n\/\/\u5f15\u53f7\u65b9\u5f0f:\u6bd4\u8f83\u9002\u5408\u5b9a\u4e49\u90a3\u4e9b\u6bd4\u8f83\u77ed\uff08\u4e0d\u8d85\u8fc7\u4e00\u884c\uff09\u6216\u8005\u6ca1\u6709\u7ed3\u6784\u8981\u6c42\u7684\u5b57\u7b26\u4e32;\u5982\u679c\u6709\u7ed3\u6784\u8981\u6c42,\u6216\u8005\u5185\u5bb9\u8d85\u8fc7\u4e00\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4e24\u79cd\u7ed3\u6784\u5b9a\necho '&lt;br\/>';\n\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\t#\u7ed3\u6784\u5316\u5b9a\u4e49\n#nowdoc\u5b57\u7b26\u4e32\uff1a\u6ca1\u6709\u5355\u5f15\u53f7\u7684\u5355\u5f15\u53f7\u5b57\u7b26\u4e32\n$a3 = &lt;&lt;&lt;'EOD'\n\t\u8fd9\u662f\u4e00\u4e2anowdoc\u5b57\u7b26\u4e32\n\t\u6240\u5b9a\u4e49\u7684\u65b9\u5f0f\nEOD;\n#heredoc\u5b57\u7b26\u4e32\uff1a\u6ca1\u6709\u53cc\u5f15\u53f7\u7684\u53cc \u5f15\u53f7\u5b57\u7b26\u4e32\n$a4 = &lt;&lt;&lt;EOD\n\t\u8fd9\u662f\u4e00\u4e2aheredoc\u5b57\u7b26\u4e32\n\t\u6240\u5b9a\u4e49\u7684\u65b9\u5f0f\nEOD;\nvar_dump($a3,$a4);\necho '&lt;br\/>';\n\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\t#\u5b57\u7b26\u4e32\u8f6c\u4e49\n\/*\n\u8f6c\u4e49\u7684\u542b\u4e49:\u5728\u8ba1\u7b97\u673a\u901a\u7528\u534f\u8bae\u4e2d\uff0c\u6709\u4e00\u4e9b\u7279\u5b9a\u7684\u65b9\u5f0f\u5b9a\u4e49\u7684\u5b57\u6bcd\uff0c\u7cfb\u7edf\u4f1a\u7279\u5b9a\u5904\u7406:\u901a\u5e38\u8fd9\u79cd\u65b9\u5f0f\u90fd\u662f\u4f7f\u7528\u53cd\u659c\u6760+\u5b57\u6bcd\uff08\u5355\u8bcd)\u7684\u7279\u6027:\n\\rn:\u56de\u8f66\u6362\u884c\n\nPHP\u5728\u8bc6\u522b\u8f6c\u4e49\u5b57\u7b26\u7684\u65f6\u5019\u4e5f\u662f\u4f7f\u7528\u540c\u6837\u7684\u6a21\u5f0f:\u53cd\u659c\u6760+\u5b57\u6bcd\n\u5728PHP\u4e2d\u7cfb\u7edf\u5e38\u7528\u7684\u8f6c\u4e49\u7b26\u53f7:\n\n\\':\u5728\u5355\u5f15\u53f7\u5b57\u7b26\u4e32\u4e2d\u663e\u793a\u5355\u5f15\u53f7\n\\\u201c:\u5728\u53cc\u5f15\u53f7\u5b57\u7b26\u4e32\u4e2d\u663e\u793a\u53cc\u5f15\u53f7\n\\r:\u4ee3\u8868\u56de\u8f66\uff08\u7406\u8bba\u4e0a\u662f\u56de\u5230\u5f53\u524d\u884c\u7684\u9996\u4f4d\u7f6e)\n\\n:\u4ee3\u8868\u65b0\u4e00\u884c\n\\t:\u7c7b\u4f3ctab\u952e\uff0c\u8f93\u51fa4\u4e2a\u7a7a\u683c\n\\$:\u5728PHP\u4e2d\u4f7f\u7528$\u7b26\u53f7\u4f5c\u4e3a\u53d8\u91cf\u7b26\u53f7\uff0c\u56e0\u6b64\u9700\u8981\u7279\u5b9a\u8bc6\u522b\n*\/\n\/\/1)\u5176\u4e2d\u5355\u5f15\u53f7\u4e2d\u53ea\u80fd\u8bc6\u522b\\',\u800c\u53cc\u5f15\u53f7\u4e2d\u5c31\u4e0d\u80fd\u8bc6\u522b\\'\n$a1='asd\\r\\nfgh\\t\\'\\\"\\$ds';\n$a2=\"asd\\r\\nfgh\\t\\'\\\"\\$a1\";\necho $a1,'&lt;br\/>',$a2,'&lt;br\/>';\n\n\/\/2)\u53cc\u5f15\u53f7\u4e2d\u56e0\u4e3a\u80fd\u591f\u8bc6\u522b$\u7b26\u53f7\uff0c\u6240\u4ee5\u53cc\u5f15\u53f7\u4e2d\u53ef\u4ee5\u89e3\u6790\u53d8\u91cf,\u800c\u5355\u5f15\u53f7\u4e0d\u884c\n$a1='abcdefg';\n$a2=\"abc $a1 defg\";\necho $a1,'&lt;br\/>',$a2,'&lt;br\/>';\n\n\/\/\u53cc\u5f15\u53f7\u4e2d\u53d8\u91cf\u8bc6\u522b\u7684\u89c4\u5219\n\/\/1\u3001\u53d8\u91cf\u672c\u8eab\u7cfb\u7edf\u80fd\u591f\u4e0e\u540e\u9762\u7684\u5185\u5bb9\u533a\u5206\uff1a\u5e94\u8be5\u4fdd\u8bc1\u53d8\u91cf\u7684\u72ec\u7acb\u6027\uff0c\u4e0d\u8981\u8ba9\u7cfb\u7edf\u96be\u4ee5\u533a\u5206\n\/\/2\u3001\u4f7f\u7528\u53d8\u91cf\u4e13\u4e1a\u6807\u8bc6\u7b26(\u533a\u5206)\uff0c\u7ed9\u53d8\u91cf\u52a0\u4e0a\u4e00\u7ec4\u5927\u62ec\u53f7{}\n$a1='abcdefg';\n$a2=\"abc{$a1}defg\";\necho $a1,'&lt;br\/>',$a2,'&lt;br\/>';\n\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\t#\u7ed3\u6784\u5316\u5b9a\u4e49\u5b57\u7b26\u4e32\u53d8\u91cf\u7684\u89c4\u5219:\n\/*\n1\u3001\u7ed3\u6784\u5316\u5b9a\u4e49\u5b57\u7b26\u4e32\u5bf9\u5e94\u7684\u8fb9\u754c\u7b26\u6709\u6761\u4ef6:\n1.1 \u4e0a\u8fb9\u754c\u7b26\u540e\u9762\u4e0d\u80fd\u8ddf\u4efb\u4f55\u5185\u5bb9;\n1.2\u4e0b\u8fb9\u754c\u7b26\u5fc5\u987b\u9876\u683c:\u6700\u5de6\u8fb9;\n1.3 \u4e0b\u8fb9\u754c\u540c\u6837\u540e\u9762\u53ea\u80fd\u8ddf\u5206\u53f7\uff0c\u4e0d\u80fd\u8ddf\u4efb\u4f55\u5185\u5bb9;\n2\u3001\u7ed3\u6784\u5316\u5b9a\u4e49\u5b57\u7b26\u4e32\u7684\u5185\u90e8\uff08\u8fb9\u754c\u7b26\u4e4b\u95f4\uff09\u7684\u6240\u6709\u5185\u5bb9\u90fd\u662f\u5b57\u7b26\u4e32\u672c\u8eab\n*\/\n$a1 = &lt;&lt;&lt;EOD\n\t\/\/\u8fd9\u4e2a\u662f\u5f39\u51fa\u5185\u5bb9\n\t&lt;script>\n\t\talert('$a2');\t\/\/js\u5f39\u51fa\u4fe1\u606f\u6846\n\t&lt;\/script>\nEOD;\necho $a1;\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\/91"}],"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=91"}],"version-history":[{"count":0,"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/posts\/91\/revisions"}],"wp:attachment":[{"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=91"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=91"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=91"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}