{"id":2629,"date":"2015-09-30T12:07:42","date_gmt":"2015-09-30T12:07:42","guid":{"rendered":"http:\/\/www.webhozz.com\/blog\/?p=2629"},"modified":"2019-06-27T07:46:50","modified_gmt":"2019-06-27T07:46:50","slug":"cara-pengecekan-tipe-data-argumen-fungsi","status":"publish","type":"post","link":"https:\/\/www.webhozz.com\/blog\/cara-pengecekan-tipe-data-argumen-fungsi\/","title":{"rendered":"Cara Pengecekan Tipe Data Argumen Fungsi"},"content":{"rendered":"<p>Fungsi-fungsi diatas dapat dimanfaatkan untuk pengecekan tipe data suatu variabel,<br \/>\ndan tentu saja juga argumen fungsi. Agar lebih mudah dipahami, saya telah merancang<br \/>\nfungsi pangkat() yang berfungsi untuk melakukan pemangkatan bilangan.<\/p>\n<p>Fungsi pangkat() saya rancang dengan 2 buah inputan atau parameter.<br \/>\nParameter pertama adalah angka yang akan dihitung, dan parameter<br \/>\nkedua adalah nilai pangkatnya.<br \/>\npangkat(2,3) berarti 2 pangkat 3. pangkat(2,8) berarti 2 pangkat 8.<br \/>\nKedua parameter ini harus berupa angka, dan khusus untuk nilai pangkat,<br \/>\nharus berupa angka bulat (integer).<!--more--><\/p>\n<p>Berikut adalah kode program fungsi pangkat():<\/p>\n<pre class=\"brush: php; title: ; notranslate\" title=\"\">\r\n&lt;!--?php &amp;lt;br ?--&gt; function pangkat($nilai, $pangkat)\r\n{\r\nif (is_numeric($nilai) AND is_int($pangkat))\r\n\/\/pengecekan tipe data argumen\r\n{\r\n\/\/Jika argumen sesuai, maka jalankan proses fungsi\r\n$hasil=1;\r\nfor ($i=1;$i&amp;lt;=$pangkat;$i++)\r\n{\r\n$hasil=$hasil*$nilai;\r\n}\r\nreturn $hasil;\r\n}\r\nelse\r\n{\r\n\/\/Bagian ini akan dijalankan jika tipe data argumen bukan angka\r\nreturn &quot;Tipe data argumen harus berupa angka&quot;;\r\n}\r\n}\r\n\r\n\/\/Test beberapa kasus inputan untuk fungsi pangkat()\r\necho pangkat(5,2);\r\necho &quot;\r\n&quot;;\r\necho pangkat(5.6,2);\r\necho &quot;\r\n&quot;;\r\necho pangkat(2,8);\r\necho &quot;\r\n&quot;;\r\necho pangkat(5,2.9);\r\necho &quot;\r\n&quot;;\r\necho pangkat(&quot;lima&quot;,2);\r\necho &quot;\r\n&quot;;\r\n?&amp;gt;\r\n<\/pre>\n<p>Fungsi pangkat() diatas terasa sedikit panjang, namun jika anda telah<br \/>\nmengikuti seluruh tutorial PHP di duniailkom, maka fungsi tersebut tidak<br \/>\nakan terlalu sulit untuk dipahami.<\/p>\n<p>Fungsi pangkat() saya rancang untuk menghitung pangkat dari sebuah angka.<br \/>\nVariabel $nilai dan $pangkat adalah parameter yang akan menjadi variabel perantara.<\/p>\n<p>Pada baris ke-4 saya membuat pengecekan masing-masing parameter di dalam logika IF.<br \/>\nFungsi is_numeric() dan is_int() akan menghasilkan nilai TRUE jika keduanya benar,<br \/>\nsehingga saya menggabungkan keduanya kedalam logika AND. Seandainya logika AND ini salah,<br \/>\nmaka kondisi IF akan bernilai FALSE, dan bagian ELSE akan dijalankan (baris ke-13),<br \/>\ndimana saya membuat kalimat \u201cTipe data argumen harus berupa angka\u201d untuk memberitahu<br \/>\npengguna fungsi bahwa tipe argumennya harus berupa angka.<\/p>\n<p>Jika kedua kondisi is_numeric() dan is_int() benar, maka saya membuat proses perulangan for<br \/>\nuntuk mencari hasil pemangkatan. Setelah hasilnya ditemukan, perintah return akan<br \/>\nmengembalikan nilai tersebut (baris ke-11).<\/p>\n<p>Dari hasil pemanggilan fungsi, kita dapat melihat bahwa logika alur program sudah berjalan benar,<br \/>\ndan jika saya memberikan nilai argumen yang salah, hasil yang ditampilkan bukan kode error PHP,<br \/>\nmelainkan pesan kesalahan yang lebih informatif.<\/p>\n<p>Dengan menggunakan fungsi seperti is_numeric() dan is_int() kita dapat melakukan pengecekan<br \/>\ntipe data terlebih dahulu sebelum melakukan proses fungsi. Hal ini akan menghindari error program PHP,<br \/>\ndan memberikan fleksibilitas untuk melakukan tindakan pencegahan jika tipe data yang diinput<br \/>\nbukan yang seharusnya.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Fungsi-fungsi diatas dapat dimanfaatkan untuk pengecekan tipe data suatu variabel, dan tentu saja juga argumen fungsi. Agar lebih mudah dipahami, saya telah merancang fungsi pangkat()<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[962,960,963,961],"class_list":["post-2629","post","type-post","status-publish","format-standard","hentry","category-belajar-web-programming","tag-cara-cek-tipe-data-menggunakan-php","tag-contoh-koding","tag-fungsi-argumen","tag-tipe-data-php"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Cara Pengecekan Tipe Data Argumen Fungsi - 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\/cara-pengecekan-tipe-data-argumen-fungsi\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cara Pengecekan Tipe Data Argumen Fungsi - WebHozz Blog\" \/>\n<meta property=\"og:description\" content=\"Fungsi-fungsi diatas dapat dimanfaatkan untuk pengecekan tipe data suatu variabel, dan tentu saja juga argumen fungsi. 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