{"id":79,"date":"2009-11-28T14:23:00","date_gmt":"2009-11-28T19:23:00","guid":{"rendered":"http:\/\/wukenny.host-ed.net\/?p=79"},"modified":"2009-11-28T14:23:00","modified_gmt":"2009-11-28T19:23:00","slug":"php-tutorial-2","status":"publish","type":"post","link":"http:\/\/kennywu.info\/?p=79","title":{"rendered":"PHP Tutorial -2 (Data type and array)"},"content":{"rendered":"

PHP tags<\/strong>
\n<?php ?><\/code>
\nText Output<\/strong>
\necho \"something\";<\/code>
\nVariable <\/strong>
\necho \"something\"; \/\/$ in front, can not begin with a number, case sensitive<\/code>
\nConstant<\/strong>
\ndefine(\"name\", \"value\");<\/code>
\nFormat number<\/strong>
\necho sprintf(\"%01.2f\", 25); \/\/25-->25.00
\necho number_format(25000, 2); \/\/25000-->25,000.00<\/code>
\nSingle-quoted Vs double-quoted strings <\/strong>
\n$age=12; $result1=\"age\"; $result2='age'; \/\/resut1:12 <\/em>resutl2: $age<\/em><\/code>
\nJoining string<\/strong>, or concatenation (dot . or .=). To get Hello World!
\necho 'Hello'.\" \".'World';<\/code>
\nFormat a date<\/strong> ( August 10, 2006 –> 2006\/08\/10)
\necho date(\"Y\/m\/d\");<\/code>
\nArray-Create<\/strong>. index starts with 0, use one of the following ways to create.
\n$pets[0]=\"unicorn\"<\/code>
\n$pets = array(\"dragon\", \"unicorn\", \"tiger\");<\/code>
\n$pets[] =\"dragon\"; $pets[] =\"unicorn\"; $pets[] =\"tiger\";<\/code>
\n$capitals =array(\"CA\" => \"Sacramento\", \"TX\" => \"Austin\", \"OR\" => \"Salem\" );<\/code>
\nArray-Viewing<\/strong>.
\nprint_r($pets);<\/code>
\nvar_dump($pets);<\/code>
\nArray-Removing<\/strong>.
\n$pets[2]=\"\";<\/code>
\nunset ($pets[4]);<\/code>
\nArray-Sorting<\/strong>.
\nsort(\"pets\"); \/\/To sort an array that has numbers as keys and reassign keys<\/code>
\nasort(\"pets\"); \/\/To sort an array that has strings as keys<\/code>
\nArray-Getting Values<\/strong>.
\nlist <\/strong>($firstvar, $secondvar)=$pets;
\n\/\/To get value from an array that has numbers as keys<\/strong> and put them in variables
\nextract<\/strong>(\"pets\");
\n\/\/To copy all the values from an array into variables named from the corresponding keys. The sample from the book is wrong, since no key was assigned in $shirtInfo
\ncurrent<\/strong>($arrayname) next<\/strong>($arrayname) previous<\/strong>($arrayname) end<\/strong>($arrayname) reset<\/strong>($arrayname);
\n\/\/Manually iterate through an array
\nforeach<\/strong>($capitals as $state =>$city)
\n\/\/walks through the array one value at a time.<\/p>\n","protected":false},"excerpt":{"rendered":"

PHP tags <?php ?> Text Output echo “something”; Variable echo “something”; \/\/$ in front, can not begin with a number, case sensitive Constant define(“name”, “value”); Format number echo sprintf(“%01.2f”, 25); \/\/25–>25.00 echo number_format(25000, 2); \/\/25000–>25,000.00 Single-quoted Vs double-quoted strings $age=12; … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[47],"class_list":["post-79","post","type-post","status-publish","format-standard","hentry","category-lamp","tag-php"],"_links":{"self":[{"href":"http:\/\/kennywu.info\/index.php?rest_route=\/wp\/v2\/posts\/79","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/kennywu.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/kennywu.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/kennywu.info\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/kennywu.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=79"}],"version-history":[{"count":0,"href":"http:\/\/kennywu.info\/index.php?rest_route=\/wp\/v2\/posts\/79\/revisions"}],"wp:attachment":[{"href":"http:\/\/kennywu.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=79"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/kennywu.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=79"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/kennywu.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=79"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}