{"id":2611,"date":"2018-11-05T06:48:23","date_gmt":"2018-11-04T22:48:23","guid":{"rendered":"https:\/\/tao0.date\/?p=2611"},"modified":"2018-11-05T06:48:23","modified_gmt":"2018-11-04T22:48:23","slug":"%e4%bf%ae%e5%a4%8dwordpress%e5%8d%87%e7%ba%a7php7-2%e4%b8%ad%e4%b8%80%e4%b8%aa%e9%94%99%e8%af%af","status":"publish","type":"post","link":"https:\/\/tao0.date\/?p=2611","title":{"rendered":"\u4fee\u590dwordpress\u5347\u7ea7PHP7.2\u4e2d\u4e00\u4e2a\u9519\u8bef"},"content":{"rendered":"
\n

PHP 7.2.x \u4e2d\u5e9f\u5f03\u7684\u529f\u80fd\u00a0\u00b6<\/a><\/h2>\n
\n

\u4e0d\u5e26\u5f15\u53f7\u7684\u5b57\u7b26\u4e32\u00a0\u00b6<\/a><\/h3>\n

\u4e0d\u5e26\u5f15\u53f7\u7684\u5b57\u7b26\u4e32\u662f\u4e0d\u5b58\u5728\u7684\u5168\u5c40\u5e38\u91cf\uff0c\u8f6c\u5316\u6210\u4ed6\u4eec\u81ea\u8eab\u7684\u5b57\u7b26\u4e32\u3002 \u5728\u4ee5\u524d\uff0c\u8be5\u884c\u4e3a\u4f1a\u4ea7\u751fE_NOTICE<\/code><\/strong>\uff0c\u4f46\u73b0\u5728\u4f1a\u4ea7\u751f\u00a0E_WARNING<\/code><\/strong>\u3002\u5728\u4e0b\u4e00\u4e2a PHP \u4e3b\u7248\u672c\u4e2d\uff0c\u5c06\u629b\u51fa\u00a0Error<\/strong>\u00a0\u5f02\u5e38\u3002<\/p>\n

\n
\n
<?php<\/p>\n

var_dump(NONEXISTENT);<\/p>\n

\/*\u00a0Output:
\nWarning:\u00a0Use\u00a0of\u00a0undefined\u00a0constant\u00a0NONEXISTENT\u00a0-\u00a0assumed\u00a0'NONEXISTENT'\u00a0(this\u00a0will\u00a0throw\u00a0an\u00a0Error\u00a0in\u00a0a\u00a0future\u00a0version\u00a0of\u00a0PHP)\u00a0in\u00a0%s\u00a0on\u00a0line\u00a0%d
\nstring(11)\u00a0\"NONEXISTENT\"
\n*\/<\/code><\/div>\n<\/div>\n<\/div>\n<\/div>\n

\n

png2wbmp()<\/a><\/span>\u00a0\u548c\u00a0jpeg2wbmp()<\/a><\/span>\u00a0\u00b6<\/a><\/h3>\n

GD \u6269\u5c55\u5185\u7684\u00a0png2wbmp()<\/a><\/span>\u00a0\u548c\u00a0jpeg2wbmp()<\/a><\/span>\u00a0\u73b0\u5df2\u88ab\u5e9f\u5f03\uff0c\u5c06\u5728\u4e0b\u4e00\u4e2a PHP \u4e3b\u7248\u672c\u4e2d\u79fb\u9664\u3002<\/p>\n<\/div>\n

\n

INTL_IDNA_VARIANT_2003<\/code><\/strong>\u00a0\u8f6c\u5316\u00a0\u00b6<\/a><\/h3>\n

Intl \u6269\u5c55\u5e9f\u5f03\u4e86\u00a0INTL_IDNA_VARIANT_2003<\/code><\/strong>\u00a0\u8f6c\u5316\uff0c\u4e3aidn_to_ascii()<\/a><\/span>\u00a0\u548c\u00a0idn_to_utf8()<\/a><\/span>\u00a0\u7684\u9ed8\u8ba4\u9009\u9879\u3002 PHP 7.4 \u4f1a\u628a\u9ed8\u8ba4\u503c\u8bbe\u7f6e\u4e3a\u00a0INTL_IDNA_VARIANT_UTS46<\/code><\/strong>\uff0c \u5e76\u5728\u4e0b\u4e00\u4e2a PHP \u4e3b\u7248\u672c\u4e2d\u5b8c\u5168\u79fb\u9664\u00a0INTL_IDNA_VARIANT_2003<\/code><\/strong>\u3002<\/p>\n<\/div>\n

\n

__autoload()<\/a><\/span>\u00a0\u65b9\u6cd5\u00a0\u00b6<\/a><\/h3>\n

__autoload()<\/a><\/span>\u00a0\u65b9\u6cd5\u5df2\u88ab\u5e9f\u5f03\uff0c \u56e0\u4e3a\u548c\u00a0spl_autoload_register()<\/a><\/span>\u00a0\u76f8\u6bd4\u529f\u80fd\u8f83\u5dee (\u56e0\u4e3a\u65e0\u6cd5\u94fe\u5f0f\u5904\u7406\u591a\u4e2a autoloader)\uff0c \u800c\u4e14\u4e5f\u65e0\u6cd5\u5728\u4e24\u79cd autoloading \u6837\u5f0f\u4e2d\u914d\u5408\u4f7f\u7528\u3002<\/p>\n<\/div>\n

\n

track_errors<\/code>\u00a0ini \u8bbe\u7f6e\u548c\u00a0$php_errormsg<\/em>\u00a0\u53d8\u91cf\u00a0\u00b6<\/a><\/h3>\n

\u5f53\u5f00\u542f\u4e86\u00a0track_errors<\/code>\u00a0ini \u8bbe\u7f6e\uff0c\u51fa\u73b0\u975e\u81f4\u547d\u9519\u8bef\u65f6\uff0c \u4f1a\u5728\u672c\u5730\u4f5c\u7528\u57df\u521b\u5efa\u00a0$php_errormsg<\/em>\u00a0\u53d8\u91cf\u3002 \u7531\u4e8e\u63d0\u4f9b\u4e86\u66f4\u597d\u7684\u65b9\u5f0f\uff1a\u00a0error_get_last()<\/a><\/span>\u00a0\u6765\u83b7\u53d6\u6b64\u7c7b\u9519\u8bef\u4fe1\u606f\uff0c\u8be5\u529f\u80fd\u88ab\u5e9f\u5f03\u3002<\/p>\n<\/div>\n

\n

create_function()<\/a><\/span>\u00a0\u51fd\u6570\u00a0\u00b6<\/a><\/h3>\n

\u8003\u8651\u5230\u6b64\u51fd\u6570\u7684\u5b89\u5168\u9690\u60a3\u95ee\u9898\uff08\u5b83\u662f\u00a0eval()<\/a><\/span>\u00a0\u7684\u7626\u5305\u88c5\u5668\uff09\uff0c\u8be5\u8fc7\u65f6\u7684\u51fd\u6570\u73b0\u5728\u5df2\u88ab\u5e9f\u5f03\u3002 \u66f4\u597d\u7684\u9009\u62e9\u662f\u533f\u540d\u51fd\u6570<\/a>\u3002<\/p>\n<\/div>\n

\n

mbstring.func_overload<\/code>\u00a0ini \u8bbe\u7f6e\u00a0\u00b6<\/a><\/h3>\n

\u7531\u4e8e\u6b64\u8bbe\u7f6e\u4f1a\u5f71\u54cd\u73af\u5883\u4e2d\u7684\u5b57\u7b26\u4e32\u7cfb\u5217\u51fd\u6570\uff0c\u5e26\u6765\u76f8\u4e92\u64cd\u4f5c\u4e2d\u7684\u95ee\u9898\uff0c\u5b83\u73b0\u5728\u5df2\u88ab\u5e9f\u5f03\u3002<\/p>\n<\/div>\n

\n

(unset)<\/em>\u00a0\u7c7b\u578b\u5f3a\u5236\u8f6c\u5316\u00a0\u00b6<\/a><\/h3>\n

\u8f6c\u5316\u4efb\u610f\u8868\u8fbe\u5f0f\u4e3a\u6b64\u7c7b\u578b\uff0c\u7ed3\u679c\u603b\u662f\u00a0NULL<\/code><\/strong>\uff0c\u6240\u4ee5\u8fd9\u4e2a\u591a\u4f59\u7684\u7c7b\u578b\u8f6c\u5316\u73b0\u5728\u4e5f\u5c31\u88ab\u5e9f\u5f03\u4e86\u3002<\/p>\n<\/div>\n

\n

parse_str()<\/a><\/span>\u00a0\u4e0d\u52a0\u7b2c\u4e8c\u4e2a\u53c2\u6570\u00a0\u00b6<\/a><\/h3>\n

\u4f7f\u7528\u00a0parse_str()<\/a><\/span>\u00a0\u65f6\uff0c\u4e0d\u52a0\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4f1a\u5bfc\u81f4\u67e5\u8be2\u5b57\u7b26\u4e32\u53c2\u6570\u5bfc\u5165\u5f53\u524d\u7b26\u53f7\u8868\u3002 \u8003\u8651\u5230\u5b89\u5168\u9690\u60a3\u95ee\u9898\uff0c\u4e0d\u52a0\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4f7f\u7528\u00a0parse_str()<\/a><\/span>\u00a0\u7684\u884c\u4e3a\u5df2\u88ab\u5e9f\u5f03\u3002 \u6b64\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u9009\u9879\u4e3a\u5fc5\u586b\u9879\uff0c\u5b83\u4f7f\u67e5\u8be2\u5b57\u7b26\u4e32\u8f6c\u4e3a Array\u3002<\/p>\n<\/div>\n

\n

gmp_random()<\/a><\/span>\u00a0\u51fd\u6570\u00a0\u00b6<\/a><\/h3>\n

\u6b64\u51fd\u6570\u57fa\u4e8e\u672a\u77e5\u7684\u3001\u53d6\u51b3\u4e8e\u5e73\u53f0\u7684 limb \u5c3a\u5bf8\u4ea7\u751f\u968f\u673a\u6570\u3002\u56e0\u6b64\uff0c\u8be5\u51fd\u6570\u5df2\u88ab\u5e9f\u5f03\u3002 \u4f7f\u7528\u66f4\u597d\u7684\u65b9\u5f0f\u4ea7\u751f\u968f\u673a\u6570\uff1a GMP \u6269\u5c55\u4e2d\u7684\u00a0gmp_random_bits()<\/a><\/span>\u00a0\u548c\u00a0gmp_random_range()<\/a><\/span>\u3002<\/p>\n<\/div>\n

\n

each()<\/a><\/span>\u00a0\u51fd\u6570\u00a0\u00b6<\/a><\/h3>\n

\u4f7f\u7528\u6b64\u51fd\u6570\u904d\u5386\u65f6\uff0c\u6bd4\u666e\u901a\u7684\u00a0foreach<\/em>\u00a0\u66f4\u6162\uff0c \u5e76\u4e14\u7ed9\u65b0\u8bed\u6cd5\u7684\u53d8\u5316\u5e26\u6765\u5b9e\u73b0\u95ee\u9898\u3002\u56e0\u6b64\u5b83\u88ab\u5e9f\u5f03\u4e86\u3002<\/p>\n<\/div>\n

\n

assert()<\/a><\/span>\u00a0\u4e00\u4e2a\u5b57\u7b26\u4e32\u53c2\u6570\u00a0\u00b6<\/a><\/h3>\n

assert()<\/a><\/span>\u00a0\u5b57\u7b26\u4e32\u53c2\u6570\u5c06\u8981\u6c42\u5b83\u80fd\u88ab\u00a0eval()<\/a><\/span>\u00a0\u6267\u884c\u3002 \u8003\u8651\u5230\u53ef\u80fd\u88ab\u6267\u884c\u8fdc\u7a0b\u4ee3\u7801\uff0c\u5e9f\u5f03\u4e86\u5b57\u7b26\u4e32\u7684\u00a0assert()<\/a><\/span>\uff0c\u6700\u597d\u63d0\u4f9b bool \u7684\u8868\u8fbe\u5f0f\u3002<\/p>\n<\/div>\n

\n

\u9519\u8bef\u5904\u7406\u5668\u5185\u7684\u00a0$errcontext<\/em>\u00a0\u53c2\u6570\u00a0\u00b6<\/a><\/h3>\n

$errcontext<\/em>\u00a0\u53c2\u6570\u5305\u542b\u4e86\u9519\u8bef\u7f51\u7ad9\u7684\u6240\u6709\u672c\u5730\u53d8\u91cf\u3002 \u8003\u8651\u5230\u5b83\u5f88\u5c11\u88ab\u7528\u5230\uff0c\u800c\u4e14\u8fd8\u4f1a\u5bfc\u81f4\u5185\u90e8\u4f18\u5316\u95ee\u9898\uff0c\u5b83\u73b0\u5728\u88ab\u5e9f\u5f03\u4e86\u3002 \u4ee3\u66ff\u7528\u6cd5\uff1a\u8c03\u8bd5\u5668\u5e94\u8be5\u81ea\u5df1\u53d6\u56de\u9519\u8bef\u7ad9\u70b9\u7684\u672c\u5730\u53d8\u91cf\u3002<\/p>\n<\/div>\n

\n

read_exif_data()<\/a><\/span>\u00a0\u51fd\u6570\u00a0\u00b6<\/a><\/h3>\n

read_exif_data()<\/a><\/span>\u00a0\u522b\u540d\u5df2\u88ab\u5e9f\u5f03 \u4f7f\u7528\u00a0exif_read_data()<\/a><\/span>\u00a0\u51fd\u6570\u4ee3\u66ff\u3002<\/p>\n<\/div>\n<\/div>\n

\n
\"add\u00a0add a note<\/small><\/a><\/span><\/p>\n

User Contributed Notes\u00a02 notes<\/span><\/h3>\n<\/div>\n
\n
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up<\/a><\/div>\n
down<\/a><\/div>\n
24<\/div>\n<\/div>\n

webmaster at thedigitalorchard dot ca<\/em><\/strong><\/a>\u00a0\u00b6<\/a><\/p>\n

9 months ago<\/strong><\/div>\n
\n
Instead of __autoload(), you can use spl_autoload_register() very easily, as per the documentation:<\/p>\n

spl_autoload_register(function ($class) {
\ninclude 'classes\/' . $class . '.class.php';
\n});<\/p>\n

And this lets you have multiple autoloaders instead of one global one.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n

\n
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up<\/a><\/div>\n
down<\/a><\/div>\n
-1<\/div>\n<\/div>\n

Anonymous<\/em><\/strong><\/a>\u00a0\u00b6<\/a><\/p>\n

3 months ago<\/strong><\/div>\n
\n
An empty <?php?> Codeblock in PHP 7.2.0 will put out an \"Unquoted strings\" warning. To prevent that, add at least one empty space into the codeblock.<\/p>\n

Example:
\n<?php<\/p>\n

<\/span><?<\/span>php<\/span>\/*
\necho \"This was some useful code.\\n\";
\n*\/<\/span>?>
\n<\/span>
\n?>
\nGives: PHP Warning:\u00a0 Use of undefined constant php - assumed 'php' (this will throw an Error in a future version of PHP)<\/p>\n

Fix via:
\n<?php<\/p>\n

<\/span><?<\/span>php\u00a0\u00a0\u00a0<\/span>\/*
\necho \"This was some useful code.\\\";
\n*\/<\/span>?>
\n<\/span>
\n?><\/p>\n

Don't know if that is an intentional behaviour or a side effect.<\/span><\/code><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"

PHP 7.2.x \u4e2d\u5e9f\u5f03\u7684\u529f\u80fd\u00a0\u00b6 \u4e0d\u5e26\u5f15\u53f7\u7684\u5b57…<\/p>\n","protected":false},"author":1,"featured_media":2612,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-2611","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-wordpress"],"_links":{"self":[{"href":"https:\/\/tao0.date\/index.php?rest_route=\/wp\/v2\/posts\/2611","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tao0.date\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tao0.date\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tao0.date\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tao0.date\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2611"}],"version-history":[{"count":0,"href":"https:\/\/tao0.date\/index.php?rest_route=\/wp\/v2\/posts\/2611\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tao0.date\/index.php?rest_route=\/wp\/v2\/media\/2612"}],"wp:attachment":[{"href":"https:\/\/tao0.date\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2611"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tao0.date\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2611"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tao0.date\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}