{"id":3031,"date":"2016-05-26T07:40:34","date_gmt":"2016-05-26T07:40:34","guid":{"rendered":"http:\/\/www.webhozz.com\/blog\/?p=3031"},"modified":"2019-06-27T07:46:47","modified_gmt":"2019-06-27T07:46:47","slug":"nilai-konstanta-php-tidak-dapat-diubah","status":"publish","type":"post","link":"https:\/\/www.webhozz.com\/blog\/nilai-konstanta-php-tidak-dapat-diubah\/","title":{"rendered":"Nilai Konstanta PHP Tidak Dapat Diubah"},"content":{"rendered":"<p>Jika sebuah konstanta telah didefenisikan, kita tidak bisa merubah nilai tersebut.<\/p>\n<p>Contoh error konstanta:<\/p>\n<pre class=\"brush: php; title: ; notranslate\" title=\"\">\r\n&lt;?\r\n   define(&quot;GAJI&quot;, 5000000);\r\n   echo GAJI;  echo &quot;&lt;br \/&gt;&quot;; \r\n   define(&quot;GAJI&quot;, 50000);\r\n?&gt;\r\n<\/pre>\n<p>Jika kode program tersebut dijalankan, berikut tampilannya:<\/p>\n<p>5000000<br \/>\nNotice: Constant GAJI already defined in<br \/>\nD:\\xampp\\htdocs\\belajar\\test.php on line 4<\/p>\n<p>-Konstanta hanya dapat berisi tipe data tertentu<\/p>\n<p>Konstanta dalam PHP hanya dapat berisi tipe data sederhana (disebut juga jenis tipe skalar), yakni: boolean, integer, float dan string. Hal ini berbeda dengan variabel, yang dapat juga berisi tipe data turunan seperti array, objek atau resources.<\/p>\n<pre class=\"brush: php; title: ; notranslate\" title=\"\">\r\n&lt;?php\r\n   define(&quot;GAJI&quot;, 5000000);\r\n   echo GAJI;  echo &quot;&lt;br \/&gt;&quot;; \r\n   define(&quot;GAJI_PEGAWAI&quot;, array( 1000000,1500000));\r\n?&gt;\r\n<\/pre>\n<p>Hasil contoh diatas akan menghasilkan error sebagai berikut:<\/p>\n<p>5000000<br \/>\nWarning: Constants may only evaluate to scalar values in <\/p>\n<p>D:\\xampp\\htdocs\\belajar\\test.php on line <\/p>\n<p>Di dalam contoh diatas saya mencoba memberikan nilai array sebagai nilai dari konstanta GAJI_PEGAWAI, namun PHP mengeluarkan error yang menjelaskan bahwa konstanta hanya dapat berisi nilai dengan tipe skalar saja. Tipe skalar ini adalah boolean, integer, float dan string. Kita akan mempelajari tipe-tipe data ini dalam tutorial selanjutnya.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Jika sebuah konstanta telah didefenisikan, kita tidak bisa merubah nilai tersebut. Contoh error konstanta: &lt;? define(&quot;GAJI&quot;, 5000000); echo GAJI; echo &quot;&lt;br \/&gt;&quot;; define(&quot;GAJI&quot;, 50000); ?&gt;<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[1065,1064,1063],"class_list":["post-3031","post","type-post","status-publish","format-standard","hentry","category-belajar-web-programming","tag-konstanta-dalam-php","tag-nilai-konstanta","tag-php-konstanta"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nilai Konstanta PHP Tidak Dapat Diubah - WebHozz Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.webhozz.com\/blog\/nilai-konstanta-php-tidak-dapat-diubah\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nilai Konstanta PHP Tidak Dapat Diubah - WebHozz Blog\" \/>\n<meta property=\"og:description\" content=\"Jika sebuah konstanta telah didefenisikan, kita tidak bisa merubah nilai tersebut. 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