\u6211\u4eec\u5c31\u628aPHP\u5165\u95e8\u5f53\u6210\u4e00\u4e2a\u82f9\u679c\u5427\uff01\u4e00\u53e3\u4e00\u53e3\u7684\u5403\u6389\u4ed6\uff01
\n\u4e0d\u5570\u55e6\u4e86\uff01\u5f00\u59cb\u4e86<\/p>\n
1\u3001\u5d4c\u5165\u65b9\u6cd5\uff1a<\/strong> \u5b57\u7b26\u4e32\u8fd0\u7b97\uff1a<\/strong> 1\u3001if..else \u5faa\u73af\u6709\u4e09\u79cd\u7ed3\u6784<\/p>\n \u7b2c\u4e00\u79cd\u662f\u53ea\u6709\u7528\u5230 if \u6761\u4ef6\uff0c\u5f53\u4f5c\u5355\u7eaf\u7684\u5224\u65ad\u3002\u89e3\u91ca\u6210 “\u82e5\u53d1\u751f\u4e86\u67d0\u4e8b\u5219\u600e\u6837\u5904\u7406”\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n if (expr) { statement }<\/p>\n \u5176\u4e2d\u7684 expr \u4e3a\u5224\u65ad\u7684\u6761\u4ef6\uff0c\u901a\u5e38\u90fd\u662f\u7528\u903b\u8f91\u8fd0\u7b97\u7b26\u53f7\u5f53\u5224\u65ad\u7684\u6761\u4ef6\u3002\u800c statement \u4e3a\u7b26\u5408\u6761\u4ef6\u7684\u6267\u884c\u90e8\u5206\u7a0b\u5e8f\uff0c\u82e5\u7a0b\u5e8f\u53ea\u6709\u4e00\u884c\uff0c\u53ef\u4ee5\u7701\u7565\u5927\u62ec\u53f7 {}\u3002<\/p>\n \u8303\u4f8b\uff1a\u672c\u4f8b\u7701\u7565\u5927\u62ec\u53f7\u3002<\/p>\n <?php \u8fd9\u91cc\u7279\u522b\u6ce8\u610f\u7684\u662f\uff0c\u5224\u65ad\u662f\u5426\u76f8\u7b49\u662f==\u800c\u4e0d\u662f=\uff0cASP\u7a0b\u5e8f\u5458\u53ef\u80fd\u5e38\u72af\u8fd9\u4e2a\u9519\u8bef\uff0c= \u662f\u8d4b\u503c\u3002<\/p>\n \u8303\u4f8b\uff1a\u672c\u4f8b\u7684\u6267\u884c\u90e8\u5206\u6709\u4e09\u884c\uff0c\u4e0d\u53ef\u7701\u7565\u5927\u62ec\u53f7\u3002<\/p>\n <?php \u7b2c\u4e24\u79cd\u662f\u9664\u4e86 if \u4e4b\u5916\uff0c\u52a0\u4e0a\u4e86 else \u7684\u6761\u4ef6\uff0c\u53ef\u89e3\u91ca\u6210 “\u82e5\u53d1\u751f\u4e86\u67d0\u4e8b\u5219\u600e\u6837\u5904\u7406\uff0c\u5426\u5219\u8be5\u5982\u4f55\u89e3\u51b3”\u3002\u8bed\u6cd5\u5982\u4e0b<\/p>\n if (expr) { statement1 } else { statement2 } \u8303\u4f8b\uff1a\u4e0a\u9762\u7684\u4f8b\u5b50\u6765\u4fee\u6539\u6210\u66f4\u5b8c\u6574\u7684\u5904\u7406\u3002\u5176\u4e2d\u7684 else \u7531\u4e8e\u53ea\u6709\u4e00\u884c\u6267\u884c\u7684\u6307\u4ee4\uff0c\u56e0\u6b64\u4e0d\u7528\u52a0\u4e0a\u5927\u62ec\u53f7\u3002<\/p>\n <?php \u7b2c\u4e09\u79cd\u5c31\u662f\u9012\u5f52\u7684 if..else \u5faa\u73af\uff0c\u901a\u5e38\u7528\u5728\u591a\u79cd\u51b3\u7b56\u5224\u65ad\u65f6\u3002\u5b83\u5c06\u6570\u4e2a if..else \u62ff\u6765\u5408\u5e76\u8fd0\u7528\u5904\u7406\u3002<\/p>\n \u76f4\u63a5\u770b\u4e0b\u9762\u7684\u4f8b\u5b50<\/p>\n <?php \u4e0a\u4f8b\u53ea\u7528\u4e8c\u5c42\u7684 if..else \u5faa\u73af\uff0c\u7528\u6765\u6bd4\u8f83 a \u548c b \u4e24\u4e2a\u53d8\u91cf\u3002\u5b9e\u9645\u8981\u4f7f\u7528\u8fd9\u79cd\u9012\u5f52 if..else \u5faa\u73af\u65f6\uff0c\u8bf7\u5c0f\u5fc3\u4f7f\u7528\uff0c\u56e0\u4e3a\u592a\u591a\u5c42\u7684\u5faa\u73af\u5bb9\u6613\u4f7f\u8bbe\u8ba1\u7684\u903b\u8f91\u51fa\u95ee\u9898\uff0c\u6216\u8005\u5c11\u6253\u4e86\u5927\u62ec\u53f7\u7b49\uff0c\u90fd\u4f1a\u9020\u6210\u7a0b\u5e8f\u51fa\u73b0\u83ab\u540d\u5176\u5999\u7684\u95ee\u9898\u3002<\/p>\n 2\u3001 for \u5faa\u73af\u5c31\u5355\u7eaf\u53ea\u6709\u4e00\u79cd\uff0c\u6ca1\u6709\u53d8\u5316\uff0c\u5b83\u7684\u8bed\u6cd5\u5982\u4e0b<\/p>\n for (expr1; expr2; expr3) { statement }<\/p>\n \u5176\u4e2d\u7684 expr1 \u4e3a\u6761\u4ef6\u7684\u521d\u59cb\u503c\u3002expr2 \u4e3a\u5224\u65ad\u7684\u6761\u4ef6\uff0c\u901a\u5e38\u90fd\u662f\u7528\u903b\u8f91\u8fd0\u7b97\u7b26\u53f7 (logical operators) \u5f53\u5224\u65ad\u7684\u6761\u4ef6\u3002expr3 \u4e3a\u6267\u884c statement \u540e\u8981\u6267\u884c\u7684\u90e8\u4efd\uff0c\u7528\u6765\u6539\u53d8\u6761\u4ef6\uff0c\u4f9b\u4e0b\u6b21\u7684\u5faa\u73af\u5224\u65ad\uff0c\u5982\u52a0\u4e00..\u7b49\u7b49\u3002\u800c statement \u4e3a\u7b26\u5408\u6761\u4ef6\u7684\u6267\u884c\u90e8\u5206\u7a0b\u5e8f\uff0c\u82e5\u7a0b\u5e8f\u53ea\u6709\u4e00\u884c\uff0c\u53ef\u4ee5\u7701\u7565\u5927\u62ec\u53f7 {}\u3002<\/p>\n \u4e0b\u4f8b\u662f\u7528 for \u5faa\u73af\u5199\u7684\u7684\u4f8b\u5b50\u3002<\/p>\n <?php 3\u3001 switch \u5faa\u73af\uff0c\u901a\u5e38\u5904\u7406\u590d\u5408\u5f0f\u7684\u6761\u4ef6\u5224\u65ad\uff0c\u6bcf\u4e2a\u5b50\u6761\u4ef6\uff0c\u90fd\u662f case \u6307\u4ee4\u90e8\u5206\u3002\u5728\u5b9e\u4f5c\u4e0a\u82e5\u4f7f\u7528\u8bb8\u591a\u7c7b\u4f3c\u7684 if \u6307\u4ee4\uff0c\u53ef\u4ee5\u5c06\u5b83\u7efc\u5408\u6210 switch \u5faa\u73af\u3002<\/p>\n \u8bed\u6cd5\u5982\u4e0b<\/p>\n switch (expr) { case expr1: statement1; break; case expr2: statement2; break; default: statementN; break; }<\/p>\n \u5176\u4e2d\u7684 expr \u6761\u4ef6\uff0c\u901a\u5e38\u4e3a\u53d8\u91cf\u540d\u79f0\u3002\u800c case \u540e\u7684 exprN\uff0c\u901a\u5e38\u8868\u793a\u53d8\u91cf\u503c\u3002\u5192\u53f7\u540e\u5219\u4e3a\u7b26\u5408\u8be5\u6761\u4ef6\u8981\u6267\u884c\u7684\u90e8\u5206\u3002\u6ce8\u610f\u8981\u7528 break \u8df3\u79bb\u5faa\u73af\u3002<\/p>\n <?php \u8fd9\u91cc\u9700\u8981\u6ce8\u610f\u7684\u662fbreak;\u522b\u9057\u6f0f\u4e86\uff0cdefault\uff0c\u7701\u7565\u662f\u53ef\u4ee5\u7684\u3002<\/p>\n \u5f88\u660e\u663e\u7684\uff0c\u4e0a\u8ff0\u7684\u4f8b\u5b50\u7528 if \u5faa\u73af\u5c31\u5f88\u9ebb\u70e6\u4e86\u3002\u5f53\u7136\u5728\u8bbe\u8ba1\u65f6\uff0c\u8981\u5c06\u51fa\u73b0\u673a\u7387\u6700\u5927\u7684\u6761\u4ef6\u653e\u5728\u6700\u524d\u9762\uff0c\u6700\u5c11\u51fa\u73b0\u7684\u6761\u4ef6\u653e\u5728\u6700\u540e\u9762\uff0c\u53ef\u4ee5\u589e\u52a0\u7a0b\u5e8f\u7684\u6267\u884c\u6548\u7387\u3002\u4e0a\u4f8b\u7531\u4e8e\u6bcf\u5929\u51fa\u73b0\u7684\u673a\u7387\u76f8\u540c\uff0c\u6240\u4ee5\u4e0d\u7528\u6ce8\u610f\u6761\u4ef6\u7684\u987a\u5e8f\u3002<\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" \u6211\u4eec\u5c31\u628aPHP\u5165\u95e8\u5f53\u6210\u4e00\u4e2a\u82f9\u679c\u5427\uff01\u4e00\u53e3\u4e00\u53e3\u7684\u5403\u6389\u4ed6\uff01 \u4e0d\u5570\u55e6\u4e86\uff01\u5f00\u59cb\u4e86 1\u3001\u5d4c\u5165\u65b9\u6cd5\uff1a \u7c7b\u4f3cASP\u7684<%\uff0cPHP\u53ef\u4ee5\u662f<?php\u6216\u8005\u662f<?\uff0c\u7ed3\u675f\u7b26\u53f7\u662f?>\uff0c\u5f53\u7136\u60a8\u4e5f\u53ef\u4ee5\u81ea\u5df1\u6307\u5b9a\u3002 2\u3001\u5f15\u7528\u6587\u4ef6\uff1a \u5f15\u7528\u6587\u4ef6\u7684\u65b9\u6cd5\u6709\u4e24\u79cd…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"topic":[],"class_list":["post-67748","post","type-post","status-publish","format-standard","hentry","category-phps"],"_links":{"self":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts\/67748","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/comments?post=67748"}],"version-history":[{"count":1,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts\/67748\/revisions"}],"predecessor-version":[{"id":67749,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts\/67748\/revisions\/67749"}],"wp:attachment":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/media?parent=67748"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/categories?post=67748"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/tags?post=67748"},{"taxonomy":"topic","embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/topic?post=67748"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\u7c7b\u4f3cASP\u7684<%\uff0cPHP\u53ef\u4ee5\u662f<?php\u6216\u8005\u662f<?\uff0c\u7ed3\u675f\u7b26\u53f7\u662f?>\uff0c\u5f53\u7136\u60a8\u4e5f\u53ef\u4ee5\u81ea\u5df1\u6307\u5b9a\u3002
\n2\u3001\u5f15\u7528\u6587\u4ef6\uff1a<\/strong>
\n\u5f15\u7528\u6587\u4ef6\u7684\u65b9\u6cd5\u6709\u4e24\u79cd\uff1arequire \u53ca include\u3002
\nrequire \u7684\u4f7f\u7528\u65b9\u6cd5\u5982 require(“MyRequireFile.php”); \u3002\u8fd9\u4e2a\u51fd\u6570\u901a\u5e38\u653e\u5728 PHP \u7a0b\u5e8f\u7684\u6700\u524d\u9762\uff0cPHP \u7a0b\u5e8f\u5728\u6267\u884c\u524d\uff0c\u5c31\u4f1a\u5148\u8bfb\u5165 require \u6240\u6307\u5b9a\u5f15\u5165\u7684\u6587\u4ef6\uff0c\u4f7f\u5b83\u53d8\u6210 PHP \u7a0b\u5e8f\u7f51\u9875\u7684\u4e00\u90e8\u4efd\u3002\u5e38\u7528\u7684\u51fd\u6570\uff0c\u4ea6\u53ef\u4ee5\u8fd9\u4e2a\u65b9\u6cd5\u5c06\u5b83\u5f15\u5165\u7f51\u9875\u4e2d\u3002
\ninclude \u4f7f\u7528\u65b9\u6cd5\u5982 include(“MyIncludeFile.php”); \u3002\u8fd9\u4e2a\u51fd\u6570\u4e00\u822c\u662f\u653e\u5728\u6d41\u7a0b\u63a7\u5236\u7684\u5904\u7406\u90e8\u5206\u4e2d\u3002PHP \u7a0b\u5e8f\u7f51\u9875\u5728\u8bfb\u5230 include \u7684\u6587\u4ef6\u65f6\uff0c\u624d\u5c06\u5b83\u8bfb\u8fdb\u6765\u3002\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u628a\u7a0b\u5e8f\u6267\u884c\u65f6\u7684\u6d41\u7a0b\u7b80\u5355\u5316\u3002
\n3\u3001\u6ce8\u91ca\u65b9\u6cd5\uff1a<\/strong>
\n<?php
\necho “\u8fd9\u662f\u7b2c\u4e00\u79cd\u4f8b\u5b50\u3002\\n” ; \/\/ \u672c\u4f8b\u662f C++ \u8bed\u6cd5\u7684\u6ce8\u91ca \uff08PHP\u7684\u6ce8\u91ca\u8ddfC\u5dee\u4e0d\u591a\uff01\uff09
\n\/* \u672c\u4f8b\u91c7\u7528\u591a\u884c\u7684
\n\u6ce8\u91ca\u65b9\u5f0f *\/
\necho “\u8fd9\u662f\u7b2c\u4e8c\u79cd\u4f8b\u5b50\u3002\\n” ;
\necho “\u8fd9\u662f\u7b2c\u4e09\u79cd\u4f8b\u5b50\u3002\\n” ; # \u672c\u4f8b\u4f7f\u7528 UNIX Shell \u8bed\u6cd5\u6ce8\u91ca
\n?>
\n4\u3001\u53d8\u91cf\u7c7b\u578b\uff1a<\/strong>
\n$mystring = “\u6211\u662f\u5b57\u7b26\u4e32” ;
\n$NewLine = “\u6362\u884c\u4e86\\n” ;
\n$int1 = 38 ;
\n$float1 = 1.732 ;
\n$float2 = 1.4E+2 ;
\n$MyArray1 = array( “\u5b50” , “\u4e11” , “\u5bc5” , “\u536f” );
\n\u8fd9\u91cc\u5f15\u51fa\u4e24\u4e2a\u95ee\u9898\uff0c\u9996\u5148PHP\u53d8\u91cf\u4ee5$\u5f00\u5934\uff0c\u7b2c\u4e8cPHP\u8bed\u53e5\u4ee5;\u7ed3\u5c3e\uff0c\u53ef\u80fdASP\u7a0b\u5e8f\u5458\u4f1a\u4e0d\u9002\u5e94\u3002\u8fd9\u4e24\u4e2a\u9057\u6f0f\u4e5f\u662f\u7a0b\u5e8f\u4e0a\u5927\u591a\u9519\u8bef\u6240\u5728\u3002
\n5\u3001\u8fd0\u7b97\u7b26\u53f7\uff1a<\/strong>
\n\u6570**\u975e\u6cd5\u5b57\u773c\u5df2\u88ab\u5c4f\u853d**\u7b97\uff1a
\n\u7b26\u53f7 \u610f\u4e49
\n+ \u52a0\u6cd5\u8fd0\u7b97
\n– \u51cf\u6cd5\u8fd0\u7b97
\n* \u4e58\u6cd5\u8fd0\u7b97
\n\/ \u9664\u6cd5\u8fd0\u7b97
\n% \u53d6\u4f59\u6570
\n++ \u7d2f\u52a0
\n— \u9012\u51cf<\/p>\n
\n\u8fd0\u7b97\u7b26\u53f7\u53ea\u6709\u4e00\u4e2a\uff0c\u5c31\u662f\u82f1\u6587\u7684\u53e5\u53f7\u3002\u5b83\u53ef\u4ee5\u5c06\u5b57\u7b26\u4e32\u8fde\u63a5\u8d77\u6765\uff0c\u53d8\u6210\u5408\u5e76\u7684\u65b0\u5b57\u7b26\u4e32\u3002\u7c7b\u4f3cASP\u4e2d\u7684&
\n<?
\n$a = “PHP 4” ;
\n$b = “\u529f\u80fd\u5f3a\u5927” ;
\necho $a.$b;
\n?>
\n\u8fd9\u91cc\u4e5f\u5f15\u51fa\u4e24\u4e2a\u95ee\u9898\uff0c\u9996\u5148PHP\u4e2d\u8f93\u51fa\u8bed\u53e5\u662fecho\uff0c\u7b2c\u4e8c\u7c7b\u4f3cASP\u4e2d\u7684<%=\u53d8\u91cf%>\uff0cPHP\u4e2d\u4e5f\u53ef\u4ee5<?=\u53d8\u91cf?>\u3002
\n\u903b\u8f91\u8fd0\u7b97\uff1a
\n\u7b26\u53f7 \u610f\u4e49
\n< \u5c0f\u4e8e
\n> \u5927\u4e8e
\n<= \u5c0f\u4e8e\u6216\u7b49\u4e8e
\n>= \u5927\u4e8e\u6216\u7b49\u4e8e
\n== \u7b49\u4e8e
\n!= \u4e0d\u7b49\u4e8e
\n&& \u800c\u4e14 (And)
\nand \u800c\u4e14 (And)
\n\u6216\u8005 (Or)
\nor \u6216\u8005 (Or)
\nxor \u5f02\u6216 (Xor)
\n! \u4e0d (Not)
\n\u8bf4\u4e00\u4e0b\u6d41\u7a0b\u63a7\u5236\u3002
\n\u5b66\u4e60\u76ee\u7684\uff1a\u638c\u63e1php\u7684\u6d41\u7a0b\u63a7\u5236<\/strong><\/p>\n
\nif ($state==1)echo “\u54c8\u54c8” ;
\n?><\/p>\n
\nif ($state==1) {
\necho “\u54c8\u54c8 ;
\necho “<br>” ;
\n}
\n?><\/p>\n
\nif ($state==1) {
\necho “\u54c8\u54c8” ;
\necho “<br>”;
\n}
\nelse{
\necho “\u5475\u5475”;
\necho “<br>”;
\n}
\n?><\/p>\n
\nif ( $a > $b ) {
\necho “a \u6bd4 b \u5927” ;
\n} elseif ( $a == $b ) {
\necho “a \u7b49\u4e8e b” ;
\n} else {
\necho “a \u6bd4 b \u5c0f” ;
\n}
\n?><\/p>\n
\nfor ( $i = 1 ; $i <= 10 ; $i ++) {
\necho “\u8fd9\u662f\u7b2c”.$i.”\u6b21\u5faa\u73af<br>” ;
\n}
\n?><\/p>\n#####################################################<\/h6>\n
\nswitch ( date ( “D” )) {
\ncase “Mon” :
\necho “\u4eca\u5929\u661f\u671f\u4e00” ;
\nbreak;
\ncase “Tue” :
\necho “\u4eca\u5929\u661f\u671f\u4e8c” ;
\nbreak;
\ncase “Wed” :
\necho “\u4eca\u5929\u661f\u671f\u4e09” ;
\nbreak;
\ncase “Thu” :
\necho “\u4eca\u5929\u661f\u671f\u56db” ;
\nbreak;
\ncase “Fri” :
\necho “\u4eca\u5929\u661f\u671f\u4e94” ;
\nbreak;
\ndefault:
\necho “\u4eca\u5929\u653e\u5047” ;
\nbreak;
\n}
\n?><\/p>\n