{"id":529,"date":"2016-02-24T16:45:51","date_gmt":"2016-02-24T13:45:51","guid":{"rendered":"http:\/\/langtoday.com\/?p=529"},"modified":"2016-11-16T15:54:38","modified_gmt":"2016-11-16T12:54:38","slug":"%d0%b2-%d1%87%d0%b5%d0%bc-%d1%80%d0%b0%d0%b7%d0%bd%d0%b8%d1%86%d0%b0-%d0%bc%d0%b5%d0%b6%d0%b4%d1%83-isset-empty-is_null","status":"publish","type":"post","link":"https:\/\/langtoday.com\/?p=529","title":{"rendered":"\u0412 \u0447\u0435\u043c \u0440\u0430\u0437\u043d\u0438\u0446\u0430 \u043c\u0435\u0436\u0434\u0443 isset, empty, is_null \u0438 ??"},"content":{"rendered":"<p>\u041c\u0435\u0442\u043e\u0434\u044b <strong>isset<\/strong>, <strong>empty<\/strong> \u0438 <strong>is_null<\/strong>, \u0432 \u043e\u0431\u0449\u0435\u043c, \u0438\u043d\u0442\u0443\u0438\u0442\u0438\u0432\u043d\u043e \u043f\u043e\u043d\u044f\u0442\u043d\u044b. <strong>isset<\/strong> \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0435\u0442 \u043d\u0430 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u0435, empty \u043d\u0430 &#171;\u043f\u0443\u0441\u0442\u043e\u0435&#187; \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u0430 <strong>is_null<\/strong>, \u043a\u0430\u043a \u044d\u0442\u043e \u043f\u043e\u043d\u044f\u0442\u043d\u043e \u0438\u0437 \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u044f, \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0435\u0442 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u043d\u0430 <em>null<\/em>, \u043d\u043e \u0432\u043e-\u043f\u0435\u0440\u0432\u044b\u0445, \u044d\u0442\u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u043e\u0442\u0447\u0430\u0441\u0442\u0438 \u043f\u0435\u0440\u0435\u0441\u0435\u043a\u0430\u044e\u0442\u0441\u044f \u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u0435, \u0430 \u0432\u043e-\u0432\u0442\u043e\u0440\u044b\u0445, \u0438\u0445 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430 \u043d\u0435 \u0432\u0441\u0435\u0433\u0434\u0430 \u0438\u043d\u0442\u0443\u0438\u0442\u0438\u0432\u043d\u043e \u043f\u043e\u043d\u044f\u0442\u0435\u043d. \u0412 PHP 7.0 \u043f\u043e\u044f\u0432\u0438\u043b\u0441\u044f \u0435\u0449\u0435 \u0438 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 <strong>??<\/strong>, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0435\u0442 \u043d\u0430 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u0435 \u0438\u00a0<em>null<\/em> \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e. \u0417\u0434\u0435\u0441\u044c \u044f \u0441\u043e\u0441\u0442\u0430\u0432\u0438\u043b \u0448\u043f\u0430\u0440\u0433\u0430\u043b\u043a\u0443 \u043f\u043e \u0438\u0445 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044e (\u043d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u043d\u0435\u043e\u0447\u0435\u0432\u0438\u0434\u043d\u044b\u0435 \u0432\u0435\u0449\u0438 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u044b \u0436\u0438\u0440\u043d\u044b\u043c):<!--more--><\/p>\n<table>\n<tbody>\n<tr>\n<td><em>\u0417\u043d\u0430\u0447\u0435\u043d\u0438\u0435$val<\/em><\/td>\n<td><em>isset($val)<\/em><\/td>\n<td><em>empty($val)<\/em><\/td>\n<td><em>is_null($val)<\/em><\/td>\n<td><i>$val=$val??&#8217;default&#8217;<\/i><\/td>\n<\/tr>\n<tr>\n<td><em>0, false, array(), &#171;0&#187;, &#171;&#187;, 0.0<\/em><\/td>\n<td>true<\/td>\n<td>true<\/td>\n<td>false<\/td>\n<td><i>\u0438\u0441\u0445\u043e\u0434\u043d\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435<\/i><\/td>\n<\/tr>\n<tr>\n<td><em>null<\/em><\/td>\n<td><strong>false<\/strong><\/td>\n<td>true<\/td>\n<td>true<\/td>\n<td>&#8216;default&#8217;<\/td>\n<\/tr>\n<tr>\n<td><em>var $val; &#8212; \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0430\u044f \u043e\u0431\u044a\u044f\u0432\u043b\u0435\u043d\u0430, \u043d\u043e \u043d\u0435 \u043f\u0440\u043e\u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u0430<\/em><\/td>\n<td><strong>false<\/strong><\/td>\n<td>true<\/td>\n<td><strong>true<\/strong><\/td>\n<td>&#8216;default&#8217;<\/td>\n<\/tr>\n<tr>\n<td><em>1, true, &#171;a&#187;, &#187; &#187; (\u043f\u0440\u043e\u0431\u0435\u043b), 1.0, &#171;\\ 0\u201d (\u0431\u0430\u0439\u0442\u043e\u0432\u044b\u0439 Null)<\/em><\/td>\n<td>true<\/td>\n<td>false<\/td>\n<td>false<\/td>\n<td><i>\u0438\u0441\u0445\u043e\u0434\u043d\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435<\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u041c\u0435\u0442\u043e\u0434\u044b isset, empty \u0438 is_null, \u0432 \u043e\u0431\u0449\u0435\u043c, \u0438\u043d\u0442\u0443\u0438\u0442\u0438\u0432\u043d\u043e \u043f\u043e\u043d\u044f\u0442\u043d\u044b. isset \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0435\u0442 \u043d\u0430 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u0435, empty \u043d\u0430 &#171;\u043f\u0443\u0441\u0442\u043e\u0435&#187; \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u0430 is_null, \u043a\u0430\u043a \u044d\u0442\u043e \u043f\u043e\u043d\u044f\u0442\u043d\u043e \u0438\u0437 \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u044f, \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0435\u0442 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u043d\u0430 null, \u043d\u043e \u0432\u043e-\u043f\u0435\u0440\u0432\u044b\u0445, \u044d\u0442\u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u043e\u0442\u0447\u0430\u0441\u0442\u0438 \u043f\u0435\u0440\u0435\u0441\u0435\u043a\u0430\u044e\u0442\u0441\u044f \u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u0435, \u0430 \u0432\u043e-\u0432\u0442\u043e\u0440\u044b\u0445, \u0438\u0445 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430 \u043d\u0435 \u0432\u0441\u0435\u0433\u0434\u0430 \u0438\u043d\u0442\u0443\u0438\u0442\u0438\u0432\u043d\u043e \u043f\u043e\u043d\u044f\u0442\u0435\u043d. \u0412 PHP 7.0 \u043f\u043e\u044f\u0432\u0438\u043b\u0441\u044f \u0435\u0449\u0435 \u0438 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 ??, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0435\u0442 \u043d\u0430&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31],"tags":[45,111],"class_list":["post-529","post","type-post","status-publish","format-standard","hentry","category-php","tag-php","tag-111"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/langtoday.com\/index.php?rest_route=\/wp\/v2\/posts\/529","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/langtoday.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/langtoday.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/langtoday.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/langtoday.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=529"}],"version-history":[{"count":7,"href":"https:\/\/langtoday.com\/index.php?rest_route=\/wp\/v2\/posts\/529\/revisions"}],"predecessor-version":[{"id":707,"href":"https:\/\/langtoday.com\/index.php?rest_route=\/wp\/v2\/posts\/529\/revisions\/707"}],"wp:attachment":[{"href":"https:\/\/langtoday.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=529"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/langtoday.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=529"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/langtoday.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=529"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}