{"id":30413,"date":"2023-09-24T03:12:44","date_gmt":"2023-12-26T17:19:53","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%bd%93%e6%82%a8%e6%83%b3%e7%bc%96%e5%86%99%e5%ae%89%e5%85%a8%e7%b1%bb%e5%9e%8b%e7%9a%84php%e4%bb%a3%e7%a0%81%e6%97%b6%ef%bc%8c%e5%8f%af%e4%bb%a5%e4%bd%bf%e7%94%a8php7%e8%bf%9b%e8%a1%8c%e3%80%82\/"},"modified":"2025-08-12T19:03:59","modified_gmt":"2025-08-12T11:03:59","slug":"%e5%bd%93%e6%82%a8%e6%83%b3%e7%bc%96%e5%86%99%e5%ae%89%e5%85%a8%e7%b1%bb%e5%9e%8b%e7%9a%84php%e4%bb%a3%e7%a0%81%e6%97%b6%ef%bc%8c%e5%8f%af%e4%bb%a5%e4%bd%bf%e7%94%a8php7%e8%bf%9b%e8%a1%8c%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%bd%93%e6%82%a8%e6%83%b3%e7%bc%96%e5%86%99%e5%ae%89%e5%85%a8%e7%b1%bb%e5%9e%8b%e7%9a%84php%e4%bb%a3%e7%a0%81%e6%97%b6%ef%bc%8c%e5%8f%af%e4%bb%a5%e4%bd%bf%e7%94%a8php7%e8%bf%9b%e8%a1%8c%e3%80%82\/","title":{"rendered":"\u5f53\u60a8\u60f3\u7f16\u5199\u5b89\u5168\u7c7b\u578b\u7684PHP\u4ee3\u7801\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528PHP7\u8fdb\u884c"},"content":{"rendered":"<h2>PHP7\u5927\u5bb6\u597d\uff0c\u6211\u975e\u5e38\u559c\u6b22\u80fd\u591f\u8fd0\u884c\u7684PHP\u3002\u4f60\u4eec\u6709\u6ca1\u6709\u60f3\u8fc7\uff0c\u5982\u679c\u80fd\u591f\u5c06\u8fd9\u6837\u8f7b\u677e\u968f\u610f\u7684PHP\u7f16\u5199\u5f97\u66f4\u52a0\u7c7b\u578b\u5b89\u5168\uff0c\u4f1a\u66f4\u52a0\u559c\u6b22\u5462\uff1f\u6211\u662f\u8fd9\u6837\u60f3\u7684\u3002<\/p>\n<p>\u7d93\u904e\u6eff\u61c9\u8a72\u9019\u7a2e\u71b1\u5207\u8981\u6c42\uff08\u6211\u60f3\uff09\u7684\u56de\u61c9\uff0cPHP7\u6b63\u5f0f\u767c\u4f48\u5df2\u7d93\u534a\u5e74\u591a\u4e86\u3002<br \/>\n\u6211\u60f3\u5df2\u7d93\u6709\u5f88\u591a\u4eba\u8a66\u7528\u904e\u4e86\uff0c\u70ba\u4e86\u66f4\u559c\u6b61PHP\uff0c\u6211\u4e5f\u4f7f\u7528\u4e86PHP7\u7684\u4e09\u5927\u65b0\u529f\u80fd\uff0c\u4f86\u5beb\u4e86\u4e9b\u6709\u985e\u578b\u5b89\u5168\u7684PHP\uff0c\u73fe\u5728\u6211\u5c07\u6574\u7406\u9019\u500b\u7d50\u679c\u3002<\/p>\n<p>\u9806\u4fbf\u4e00\u63d0\uff0cPHP7\u7684\u4e09\u4e2a\u4e3b\u8981\u65b0\u529f\u80fd\u662f&#8230;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b9\u30ab\u30e9\u30fc\u578b\u5ba3\u8a00<\/ul>\n<\/li>\n<\/ul>\n<p>int, string, bool \u304c\u30bf\u30a4\u30d7\u30d2\u30f3\u30c6\u30a3\u30f3\u30b0\u306b\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3002<\/p>\n<p>\u623b\u308a\u5024\u306e\u578b\u5ba3\u8a00<\/p>\n<p>\u5f15\u6570\u3068\u540c\u69d8\u306b\u95a2\u6570\u306e\u623b\u308a\u5024\u3067\u3082\u578b\u5ba3\u8a00\u51fa\u6765\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3002<\/p>\n<p>Null\u5408\u4f53\u6f14\u7b97\u5b50<\/p>\n<p>\u4e09\u9805\u6f14\u7b97\u5b50\u3068 isset() \u5730\u7344\u304b\u3089\u89e3\u653e\u3055\u308c\u308b\u3002 ?? \u3068\u66f8\u304f\u3002<\/p>\n<p>\u8fd9\u662f\u5173\u4e8e\uff08\u6211\u968f\u4fbf\u53d6\u7684\u540d\u5b57\uff09\u3002<\/p>\n<h2>\u8fdb\u884c\u5b9e\u9a8c\u56e0\u4e3a\u6211\u8bd5\u7740\u5199\u4e86\u5f88\u591a\u4e1c\u897f\uff0c\u6240\u4ee5\u6211\u4f1a\u6309\u987a\u5e8f\u4ecb\u7ecd\u7ed9\u5927\u5bb6\u3002<br \/>\n\u53e6\u5916\uff0cPHP\u7248\u672c\u662f7.0.7\u3002<\/p>\n<h3>\u9a8c\u8bc11\u8fd9\u4e2a\u6837\u4f8b\u7a0b\u5e8f\u53ea\u662f\u5c06\u82f1\u8bed\u3001\u6570\u5b66\u548c\u8bed\u6587\u7684\u5206\u6570\u76f8\u52a0\uff0c\u5e76\u663e\u793a\u603b\u5206\u3002<br \/>\n\u6211\u9a6c\u4e0a\u5199\u4e00\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n\r\n<span class=\"k\">function<\/span> <span class=\"n\">calculate_total_score<\/span><span class=\"p\">(<\/span><span class=\"kt\">array<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">):<\/span> <span class=\"kt\">int<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"nv\">$english<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'english'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nv\">$math<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'math'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nv\">$japanese<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'japanese'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span> \r\n\r\n    <span class=\"nv\">$totalScore<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$english<\/span> <span class=\"o\">+<\/span> <span class=\"nv\">$math<\/span> <span class=\"o\">+<\/span> <span class=\"nv\">$japanese<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"nv\">$totalScore<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nv\">$scores<\/span> <span class=\"o\">=<\/span> <span class=\"k\">array<\/span><span class=\"p\">();<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'english'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">70<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'math'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">80<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'japanese'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">60<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nv\">$totalScore<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">calculate_total_score<\/span><span class=\"p\">(<\/span><span class=\"nv\">$scores<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"k\">echo<\/span> <span class=\"s1\">'\u5408\u8a08\u70b9\u306f'<\/span> <span class=\"mf\">.<\/span> <span class=\"nv\">$totalScore<\/span> <span class=\"mf\">.<\/span> <span class=\"s1\">'\u3067\u3057\u305f\u3002'<\/span> <span class=\"mf\">.<\/span> <span class=\"s2\">\"<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>php seven1.php\r\n\u5408\u8a08\u70b9\u306f210\u3067\u3057\u305f\u3002\r\n<\/code><\/pre>\n<p>\u9996\u5148\uff0c\u73b0\u5728\u53ef\u4ee5\u5728\u51fd\u6570\u53c2\u6570\u4e2d\u4f7f\u7528\u6807\u91cf\u7c7b\u578b\uff0c\u6240\u4ee5\u5199\u4f5c (array $scores)\u3002<br \/>\n\u7136\u540e\uff0c\u4e3a\u4e86\u6307\u5b9a\u51fd\u6570\u7684\u8fd4\u56de\u7c7b\u578b\uff0c\u5728\u53c2\u6570\u540e\u9762\u5199\u4e0a : int \u3002<br \/>\n\u8fd9\u6837\u5c31\u80fd\u5199\u51fa\u7c7b\u578b\u5b89\u5168\u7684PHP\uff01\u7c7b\u578b\u5b89\u5168\u7684PHP\u771f\u662f\u592a\u5f3a\u5927\u4e86\uff01<\/p>\n<h3>\u9a8c\u8bc1\u4e8c<br \/>\n\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u5728\u8fd9\u91cc\u9a8c\u8bc1\u4e00\u4e0b\u662f\u5426\u771f\u7684\u662f\u7c7b\u578b\u5b89\u5168\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n\r\n<span class=\"k\">function<\/span> <span class=\"n\">calculate_total_score<\/span><span class=\"p\">(<\/span><span class=\"kt\">int<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">):<\/span> <span class=\"kt\">int<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"nv\">$english<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'english'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nv\">$math<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'math'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nv\">$japanese<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'japanese'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"nv\">$totalScore<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$english<\/span> <span class=\"o\">+<\/span> <span class=\"nv\">$math<\/span> <span class=\"o\">+<\/span> <span class=\"nv\">$japanese<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"k\">return<\/span> <span class=\"nv\">$totalScore<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nv\">$scores<\/span> <span class=\"o\">=<\/span> <span class=\"k\">array<\/span><span class=\"p\">();<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'english'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">70<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'math'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">80<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'japanese'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">60<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nv\">$totalScore<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">calculate_total_score<\/span><span class=\"p\">(<\/span><span class=\"nv\">$scores<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"k\">echo<\/span> <span class=\"s1\">'\u5408\u8a08\u70b9\u306f'<\/span> <span class=\"mf\">.<\/span> <span class=\"nv\">$totalScore<\/span> <span class=\"mf\">.<\/span> <span class=\"s1\">'\u3067\u3057\u305f\u3002'<\/span> <span class=\"mf\">.<\/span> <span class=\"s2\">\"<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u6211\u5df2\u5c06\u53c2\u6570\u7684\u7c7b\u578b\u4ecearray\u66f4\u6539\u4e3aint\u3002<br \/>\n\u6267\u884c\u7ed3\u679c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>php seven2.php\r\nFatal error: Uncaught TypeError: Argument 1 passed to calculate_total_score<span class=\"o\">()<\/span> must be of the <span class=\"nb\">type <\/span>integer, array given\r\n<\/code><\/pre>\n<p>\u51fa\u9519\u4e86\uff01PHP7\u771f\u662f\u592a\u68d2\u4e86\uff01<\/p>\n<h3>\u7b2c\u4e09\u9879\u9a8c\u8bc1<br \/>\n\u6211\u4eec\u4e5f\u5c1d\u8bd5\u66f4\u6539\u8fd4\u56de\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n\r\n<span class=\"k\">function<\/span> <span class=\"n\">calculate_total_score<\/span><span class=\"p\">(<\/span><span class=\"kt\">array<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">):<\/span> <span class=\"kt\">array<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"nv\">$english<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'english'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nv\">$math<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'math'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nv\">$japanese<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'japanese'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"nv\">$totalScore<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$english<\/span> <span class=\"o\">+<\/span> <span class=\"nv\">$math<\/span> <span class=\"o\">+<\/span> <span class=\"nv\">$japanese<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"k\">return<\/span> <span class=\"nv\">$totalScore<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nv\">$scores<\/span> <span class=\"o\">=<\/span> <span class=\"k\">array<\/span><span class=\"p\">();<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'english'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">70<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'math'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">80<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'japanese'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">60<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nv\">$totalScore<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">calculate_total_score<\/span><span class=\"p\">(<\/span><span class=\"nv\">$scores<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"k\">echo<\/span> <span class=\"s1\">'\u5408\u8a08\u70b9\u306f'<\/span> <span class=\"mf\">.<\/span> <span class=\"nv\">$totalScore<\/span> <span class=\"mf\">.<\/span> <span class=\"s1\">'\u3067\u3057\u305f\u3002'<\/span> <span class=\"mf\">.<\/span> <span class=\"s2\">\"<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>php seven3.php\r\nFatal error: Uncaught TypeError: Return value of calculate_total_score<span class=\"o\">()<\/span> must be of the <span class=\"nb\">type <\/span>array, integer returned\r\n<\/code><\/pre>\n<p>\u88ab\u597d\u597d\u8bad\u65a5\u4e86\u5462\uff0c\u679c\u7136PHP7\u592a\u68d2\u4e86\u3002<br \/>\n\u4e0d\u6599\u4e8b\u60c5\u8fd8\u6ca1\u5b8c\u5462\u2026\u3002<\/p>\n<h3>\u9a8c\u8bc1\u2463<br \/>\n\u4e3a\u4e86\u5b89\u5168\u8d77\u89c1\uff0c\u6211\u4eec\u518d\u591a\u8fdb\u884c\u4e00\u4e9b\u9a8c\u8bc1\u3002<br \/>\n\u5728\u9a8c\u8bc13\u4e2d\uff0c\u6211\u4eec\u5c06\u8fd4\u56de\u503c\u7684\u7c7b\u578b\u6307\u5b9a\u4e3a\u6570\u7ec4\uff0c\u4f46\u8ba9\u6211\u4eec\u5c1d\u8bd5\u4e00\u4e0b\u5c06\u5176\u6307\u5b9a\u4e3a\u5b57\u7b26\u4e32\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n\r\n<span class=\"k\">function<\/span> <span class=\"n\">calculate_total_score<\/span><span class=\"p\">(<\/span><span class=\"kt\">array<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">):<\/span> <span class=\"kt\">string<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"nv\">$english<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'english'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nv\">$math<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'math'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nv\">$japanese<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'japanese'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"nv\">$totalScore<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$english<\/span> <span class=\"o\">+<\/span> <span class=\"nv\">$math<\/span> <span class=\"o\">+<\/span> <span class=\"nv\">$japanese<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"k\">return<\/span> <span class=\"nv\">$totalScore<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nv\">$scores<\/span> <span class=\"o\">=<\/span> <span class=\"k\">array<\/span><span class=\"p\">();<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'english'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">70<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'math'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">80<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'japanese'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">60<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nv\">$totalScore<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">calculate_total_score<\/span><span class=\"p\">(<\/span><span class=\"nv\">$scores<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"k\">echo<\/span> <span class=\"s1\">'\u5408\u8a08\u70b9\u306f'<\/span> <span class=\"mf\">.<\/span> <span class=\"nv\">$totalScore<\/span> <span class=\"mf\">.<\/span> <span class=\"s1\">'\u3067\u3057\u305f\u3002'<\/span> <span class=\"mf\">.<\/span> <span class=\"s2\">\"<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u6267\u884c\u6b64\u64cd\u4f5c\u65f6&#8230;<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>php seven4.php\r\n\u5408\u8a08\u70b9\u306f210\u3067\u3057\u305f\u3002\r\n<\/code><\/pre>\n<p>\u54c7\u585e\uff0c\u7b80\u76f4\u4e86\u4e0d\u8d77\u7684 PHP\uff01\u4e0d\u597d\u89e3\u51b3\u95ee\u9898\uff0c\u4f46\u8fd9\u4e2a\u7a0b\u5ea6\u8fd8\u53ef\u4ee5\u3002<\/p>\n<h3>\u9a8c\u8bc1\u7b2c\u4e94\u6b65<br \/>\n\u90a3\u4e48\uff0c\u8ba9\u6211\u4eec\u5c06\u8fd4\u56de\u503c\u7684\u7c7b\u578b\u6307\u5b9a\u4e3a\u5e03\u5c14\u7c7b\u578b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n\r\n<span class=\"k\">function<\/span> <span class=\"n\">calculate_total_score<\/span><span class=\"p\">(<\/span><span class=\"kt\">array<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">):<\/span> <span class=\"kt\">bool<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"nv\">$english<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'english'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nv\">$math<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'math'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nv\">$japanese<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'japanese'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"nv\">$totalScore<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$english<\/span> <span class=\"o\">+<\/span> <span class=\"nv\">$math<\/span> <span class=\"o\">+<\/span> <span class=\"nv\">$japanese<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"k\">return<\/span> <span class=\"nv\">$totalScore<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nv\">$scores<\/span> <span class=\"o\">=<\/span> <span class=\"k\">array<\/span><span class=\"p\">();<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'english'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">70<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'math'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">80<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'japanese'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">60<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nv\">$totalScore<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">calculate_total_score<\/span><span class=\"p\">(<\/span><span class=\"nv\">$scores<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"k\">echo<\/span> <span class=\"s1\">'\u5408\u8a08\u70b9\u306f'<\/span> <span class=\"mf\">.<\/span> <span class=\"nv\">$totalScore<\/span> <span class=\"mf\">.<\/span> <span class=\"s1\">'\u3067\u3057\u305f\u3002'<\/span> <span class=\"mf\">.<\/span> <span class=\"s2\">\"<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u5f53\u60a8\u6267\u884c\u8fd9\u4e2a\u64cd\u4f5c\u65f6\uff0c&#8230;<\/p>\n<pre class=\"post-pre\"><code>$ php seven5.php\r\n\u5408\u8a08\u70b9\u306f1\u3067\u3057\u305f\u3002\r\n<\/code><\/pre>\n<p>\uff3c(^o^)\uff0f\u592a\u597d\u4e86<br \/>\n\u4e0d\u4ec5\u6210\u529f\u8fd0\u884c\uff0c\u800c\u4e14\u5f97\u4e86\u4e00\u5206\u3002<br \/>\n\u6211\u5df2\u7ecf\u538c\u5026\u4e86PHP\u3002\u3002\u6211\u8981\u5c1d\u8bd5Ruby\u3002\u3002<\/p>\n<h3>\u9a8c\u8bc1\u2465<br \/>\n\u5728\u865a\u5f31\u7684\u773c\u795e\u4e2d\uff0c\u6211\u534a\u4fe1\u534a\u7591\u5730\u7784\u7740\u624b\u518c\uff0c\u601d\u7d22\u7740PHP\u662f\u5426\u65e9\u5c31\u5177\u5907\u4e86\u7c7b\u578b\u5b89\u5168\u6027&#8230; \u597d\u5427\uff0c\u624b\u518c\u4e0a\u7684\u63cf\u8ff0\u662f\u8fd9\u6837\u7684\u3002<\/p>\n<blockquote><p>\u5728\u4e2d\u6587\u4e2d\uff0c\u6807\u91cf\u7c7b\u578b\u7684\u58f0\u660e\u6709\u4e24\u79cd\u65b9\u5f0f\u3002\u4e00\u662f\u9ed8\u8ba4\u7684\u81ea\u52a8\u8f6c\u6362\uff08coercive\uff09\u6a21\u5f0f\uff0c\u4e8c\u662f\u4e25\u683c\u5224\u65ad\uff08strict\uff09\u6a21\u5f0f\u3002<\/p><\/blockquote>\n<p>\u306a\u3093\u3060\u3063\u3066\u30fc\uff01\uff01<br \/>\n\u3082\u3057\u304b\u3057\u3066 strict \u30e2\u30fc\u30c9\u306b\u3059\u308c\u3070\u3088\u3044\u306e\u3067\u306f\uff1f\uff1f<\/p>\n<p>\u6240\u4ee5\u6211\u8bd5\u7740\u505a\u4e86\u4e00\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n<span class=\"k\">declare<\/span><span class=\"p\">(<\/span><span class=\"n\">strict_types<\/span><span class=\"o\">=<\/span><span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"k\">function<\/span> <span class=\"n\">calculate_total_score<\/span><span class=\"p\">(<\/span><span class=\"kt\">array<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">):<\/span> <span class=\"kt\">bool<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"nv\">$english<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'english'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nv\">$math<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'math'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nv\">$japanese<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'japanese'<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"nv\">$totalScore<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$english<\/span> <span class=\"o\">+<\/span> <span class=\"nv\">$math<\/span> <span class=\"o\">+<\/span> <span class=\"nv\">$japanese<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"k\">return<\/span> <span class=\"nv\">$totalScore<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nv\">$scores<\/span> <span class=\"o\">=<\/span> <span class=\"k\">array<\/span><span class=\"p\">();<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'english'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">70<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'math'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">80<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$scores<\/span><span class=\"p\">[<\/span><span class=\"s1\">'japanese'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">60<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nv\">$totalScore<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">calculate_total_score<\/span><span class=\"p\">(<\/span><span class=\"nv\">$scores<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"k\">echo<\/span> <span class=\"s1\">'\u5408\u8a08\u70b9\u306f'<\/span> <span class=\"mf\">.<\/span> <span class=\"nv\">$totalScore<\/span> <span class=\"mf\">.<\/span> <span class=\"s1\">'\u3067\u3057\u305f\u3002'<\/span> <span class=\"mf\">.<\/span> <span class=\"s2\">\"<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u8981\u5c06\u4e25\u683c\u6a21\u5f0f\u6253\u5f00\uff0c\u9700\u8981\u5199\u4e0a declare(strict_types=1)\u3002<\/p>\n<p>\u5982\u679c\u7528\u8fd9\u4e2a\u6765\u6267\u884c\u7684\u8bdd<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>php seven6.php\r\nPHP Fatal error:  Uncaught TypeError: Return value of calculate_total_score<span class=\"o\">()<\/span> must be of the <span class=\"nb\">type <\/span>boolean, integer returned\r\n<\/code><\/pre>\n<p>\u51ef\u5854\u2501\u2501\u2501\u2501(\uff9f\u2200\uff9f)\u2501\u2501\u2501\u2501!!<\/p>\n<p>\u51fa\u73b0\u4e86\u9519\u8bef\u3002<\/p>\n<h2>\u7d50\u8ad6 &#8211;<br \/>\n\u7d50\u679c<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PHP\u3067\u30bf\u30a4\u30d7\u30bb\u30fc\u30d5\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304d\u305f\u3044\u3068\u304d\u306f\u3000strict \u30e2\u30fc\u30c9\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PHP\u306e\u305b\u3044\u306b\u305b\u305a\u3061\u3083\u3093\u3068\u30de\u30cb\u30e5\u30a2\u30eb\u3092\u8aad\u307f\u307e\u3057\u3087\u3046\uff08\u81ea\u6212\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">PHP7\u6700\u9ad8\uff01<\/ul>\n<h2>\u8bf7\u53c2\u8003\u4ee5\u4e0b\u7f51\u7ad9\u300ePHP\uff1a\u65b0\u529f\u80fd-\u624b\u518c\u300f<br \/>\nhttp:\/\/php.net\/manual\/zh\/migration70.new-features.php<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP7\u5927\u5bb6\u597d\uff0c\u6211\u975e\u5e38\u559c\u6b22\u80fd\u591f\u8fd0\u884c\u7684PHP\u3002\u4f60\u4eec\u6709\u6ca1\u6709\u60f3\u8fc7\uff0c\u5982\u679c\u80fd\u591f\u5c06\u8fd9\u6837\u8f7b\u677e\u968f\u610f\u7684PHP\u7f16\u5199\u5f97\u66f4\u52a0\u7c7b\u578b\u5b89\u5168\uff0c [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30413","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5f53\u60a8\u60f3\u7f16\u5199\u5b89\u5168\u7c7b\u578b\u7684PHP\u4ee3\u7801\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528PHP7\u8fdb\u884c - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u5f53\u60a8\u60f3\u7f16\u5199\u5b89\u5168\u7c7b\u578b\u7684PHP\u4ee3\u7801\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528PHP7\u8fdb\u884c\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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