{"id":201,"date":"2024-04-01T12:38:03","date_gmt":"2024-04-01T09:38:03","guid":{"rendered":"https:\/\/aslihankaratas.com\/?p=201"},"modified":"2024-04-01T12:38:04","modified_gmt":"2024-04-01T09:38:04","slug":"phpde-sabitler","status":"publish","type":"post","link":"https:\/\/aslihankaratas.com\/index.php\/2024\/04\/01\/phpde-sabitler\/","title":{"rendered":"PHP&#8217;de Sabitler"},"content":{"rendered":"\n<p>Sabitler (constants), PHP&#8217;de de\u011fi\u015fmez de\u011ferler atanm\u0131\u015f \u00f6zel tan\u0131mlay\u0131c\u0131lard\u0131r. Sabitler, bir kez tan\u0131mland\u0131ktan sonra de\u011fi\u015ftirilemezler ve genellikle program\u0131n farkl\u0131 b\u00f6l\u00fcmlerinde kullan\u0131lan de\u011ferler i\u00e7in kullan\u0131l\u0131rlar. Sabitlerin adlar\u0131 b\u00fcy\u00fck harfle yaz\u0131l\u0131r ve dolar i\u015fareti ($) ile ba\u015flamazlar.<\/p>\n\n\n\n<p>Sabitlerle ilgili baz\u0131 \u00f6nemli noktalar:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sabit adlar\u0131 b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harfe duyarl\u0131d\u0131r. Yani PI, Pi ve pi farkl\u0131 sabitlerdir.<\/li>\n\n\n\n<li>Sabitlerin de\u011feri bir kez atan\u0131r ve daha sonra de\u011fi\u015ftirilemez.<\/li>\n\n\n\n<li>Sabitler, her yerde eri\u015filebilirler, fonksiyonlar dahil.<\/li>\n<\/ul>\n\n\n\n<p>Sabitler, genellikle belirli bir de\u011ferin, \u00f6rne\u011fin bir s\u00fcr\u00fcm numaras\u0131, veritaban\u0131 bilgileri veya dosya yollar\u0131 gibi, kodun farkl\u0131 yerlerinde s\u0131k s\u0131k kullan\u0131laca\u011f\u0131 durumlarda kullan\u0131\u015fl\u0131d\u0131r. Bu \u015fekilde, bir de\u011feri bir kez tan\u0131mlayarak, bu de\u011fere ihtiya\u00e7 duydu\u011funuz her yerde sabit ad\u0131n\u0131 kullanabilirsiniz. Bu kodun daha okunabilir ve bak\u0131m\u0131 daha kolay hale gelmesine yard\u0131mc\u0131 olur.<\/p>\n\n\n\n<p>Sabitler, define() fonksiyonu veya const anahtar kelimesi kullan\u0131larak tan\u0131mlanabilir.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\ndefine(\"PI\", 3.14);\n\necho PI; \/\/ \u00c7\u0131kt\u0131: 3.14\n\nconst WEBSITE_NAME = \"MyWebsite\";\n\necho WEBSITE_NAME; \/\/ \u00c7\u0131kt\u0131: MyWebsite\n?><\/code><\/pre>\n\n\n\n<p><strong>Sihirli Sabitler<\/strong><\/p>\n\n\n\n<p>PHP&#8217;de sihirli sabitler, \u00f6nceden tan\u0131mlanm\u0131\u015f ve \u00f6zel bir anlam\u0131 olan sabitlerdir. Bu sabitler, genellikle \u00e7e\u015fitli durumlar\u0131 ve ortamlar\u0131 belirtmek i\u00e7in kullan\u0131l\u0131r.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>__LINE__: Bu sabit, mevcut sat\u0131r numaras\u0131n\u0131 i\u00e7eren dosyan\u0131n sat\u0131r numaras\u0131n\u0131 d\u00f6nd\u00fcr\u00fcr.<\/li>\n\n\n\n<li>__FILE__: Bu sabit, dosyan\u0131n tam yolunu i\u00e7eren dosyan\u0131n ad\u0131n\u0131 d\u00f6nd\u00fcr\u00fcr.<\/li>\n\n\n\n<li>__DIR__: Bu sabit, dosyan\u0131n dizin yolunu i\u00e7eren dosyan\u0131n dizinini d\u00f6nd\u00fcr\u00fcr.<\/li>\n\n\n\n<li>__FUNCTION__: Bu sabit, fonksiyonun ad\u0131n\u0131 i\u00e7eren fonksiyonun ad\u0131n\u0131 d\u00f6nd\u00fcr\u00fcr.<\/li>\n\n\n\n<li>__CLASS__: Bu sabit, s\u0131n\u0131f\u0131n ad\u0131n\u0131 i\u00e7eren s\u0131n\u0131f\u0131n ad\u0131n\u0131 d\u00f6nd\u00fcr\u00fcr.<\/li>\n\n\n\n<li>__TRAIT__: Bu sabit, trait&#8217;in ad\u0131n\u0131 i\u00e7eren trait&#8217;in ad\u0131n\u0131 d\u00f6nd\u00fcr\u00fcr.<\/li>\n\n\n\n<li>__METHOD__: Bu sabit, s\u0131n\u0131f y\u00f6nteminin ad\u0131n\u0131 i\u00e7eren y\u00f6ntemin ad\u0131n\u0131 d\u00f6nd\u00fcr\u00fcr.<\/li>\n\n\n\n<li>__NAMESPACE__: Bu sabit, ge\u00e7erli ad alan\u0131n\u0131n ad\u0131n\u0131 i\u00e7eren ad alan\u0131n\u0131n ad\u0131n\u0131 d\u00f6nd\u00fcr\u00fcr.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Sabitler (constants), PHP&#8217;de de\u011fi\u015fmez de\u011ferler atanm\u0131\u015f \u00f6zel tan\u0131mlay\u0131c\u0131lard\u0131r. Sabitler, bir kez tan\u0131mland\u0131ktan sonra de\u011fi\u015ftirilemezler ve genellikle program\u0131n farkl\u0131 b\u00f6l\u00fcmlerinde kullan\u0131lan de\u011ferler i\u00e7in kullan\u0131l\u0131rlar. Sabitlerin adlar\u0131 b\u00fcy\u00fck harfle yaz\u0131l\u0131r ve dolar i\u015fareti ($) ile ba\u015flamazlar. Sabitlerle ilgili baz\u0131 \u00f6nemli noktalar: Sabitler, genellikle belirli bir de\u011ferin, \u00f6rne\u011fin bir s\u00fcr\u00fcm numaras\u0131, veritaban\u0131 bilgileri veya dosya yollar\u0131 gibi, kodun farkl\u0131 yerlerinde s\u0131k s\u0131k kullan\u0131laca\u011f\u0131 durumlarda kullan\u0131\u015fl\u0131d\u0131r. Bu \u015fekilde, bir de\u011feri bir kez tan\u0131mlayarak, bu de\u011fere ihtiya\u00e7 duydu\u011funuz her yerde sabit ad\u0131n\u0131 kullanabilirsiniz. Bu kodun daha okunabilir ve bak\u0131m\u0131 daha kolay hale gelmesine yard\u0131mc\u0131 olur. Sabitler, define() fonksiyonu veya const anahtar kelimesi kullan\u0131larak tan\u0131mlanabilir. Sihirli Sabitler PHP&#8217;de sihirli sabitler, \u00f6nceden tan\u0131mlanm\u0131\u015f ve \u00f6zel bir anlam\u0131 olan sabitlerdir. Bu sabitler, genellikle \u00e7e\u015fitli durumlar\u0131 ve ortamlar\u0131 belirtmek i\u00e7in kullan\u0131l\u0131r.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-201","post","type-post","status-publish","format-standard","hentry","category-genel"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PHP&#039;de Sabitler - ASLIHAN KARATA\u015e<\/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:\/\/aslihankaratas.com\/index.php\/2024\/04\/01\/phpde-sabitler\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PHP&#039;de Sabitler - ASLIHAN KARATA\u015e\" \/>\n<meta property=\"og:description\" content=\"Sabitler (constants), PHP&#8217;de de\u011fi\u015fmez de\u011ferler atanm\u0131\u015f \u00f6zel tan\u0131mlay\u0131c\u0131lard\u0131r. Sabitler, bir kez tan\u0131mland\u0131ktan sonra de\u011fi\u015ftirilemezler ve genellikle program\u0131n farkl\u0131 b\u00f6l\u00fcmlerinde kullan\u0131lan de\u011ferler i\u00e7in kullan\u0131l\u0131rlar. Sabitlerin adlar\u0131 b\u00fcy\u00fck harfle yaz\u0131l\u0131r ve dolar i\u015fareti ($) ile ba\u015flamazlar. Sabitlerle ilgili baz\u0131 \u00f6nemli noktalar: Sabitler, genellikle belirli bir de\u011ferin, \u00f6rne\u011fin bir s\u00fcr\u00fcm numaras\u0131, veritaban\u0131 bilgileri veya dosya yollar\u0131 gibi, kodun farkl\u0131 yerlerinde s\u0131k s\u0131k kullan\u0131laca\u011f\u0131 durumlarda kullan\u0131\u015fl\u0131d\u0131r. Bu \u015fekilde, bir de\u011feri bir kez tan\u0131mlayarak, bu de\u011fere ihtiya\u00e7 duydu\u011funuz her yerde sabit ad\u0131n\u0131 kullanabilirsiniz. Bu kodun daha okunabilir ve bak\u0131m\u0131 daha kolay hale gelmesine yard\u0131mc\u0131 olur. Sabitler, define() fonksiyonu veya const anahtar kelimesi kullan\u0131larak tan\u0131mlanabilir. Sihirli Sabitler PHP&#8217;de sihirli sabitler, \u00f6nceden tan\u0131mlanm\u0131\u015f ve \u00f6zel bir anlam\u0131 olan sabitlerdir. 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Bu sabitler, genellikle \u00e7e\u015fitli durumlar\u0131 ve ortamlar\u0131 belirtmek i\u00e7in kullan\u0131l\u0131r.","og_url":"https:\/\/aslihankaratas.com\/index.php\/2024\/04\/01\/phpde-sabitler\/","og_site_name":"ASLIHAN KARATA\u015e","article_published_time":"2024-04-01T09:38:03+00:00","article_modified_time":"2024-04-01T09:38:04+00:00","author":"aslihankaratas","twitter_card":"summary_large_image","twitter_misc":{"Yazan:":"aslihankaratas","Tahmini okuma s\u00fcresi":"2 dakika"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/aslihankaratas.com\/index.php\/2024\/04\/01\/phpde-sabitler\/","url":"https:\/\/aslihankaratas.com\/index.php\/2024\/04\/01\/phpde-sabitler\/","name":"PHP'de Sabitler - ASLIHAN KARATA\u015e","isPartOf":{"@id":"https:\/\/aslihankaratas.com\/#website"},"datePublished":"2024-04-01T09:38:03+00:00","dateModified":"2024-04-01T09:38:04+00:00","author":{"@id":"https:\/\/aslihankaratas.com\/#\/schema\/person\/28b7a61160b8d1bb18a217d5f1e856d4"},"breadcrumb":{"@id":"https:\/\/aslihankaratas.com\/index.php\/2024\/04\/01\/phpde-sabitler\/#breadcrumb"},"inLanguage":"tr","potentialAction":[{"@type":"ReadAction","target":["https:\/\/aslihankaratas.com\/index.php\/2024\/04\/01\/phpde-sabitler\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/aslihankaratas.com\/index.php\/2024\/04\/01\/phpde-sabitler\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Anasayfa","item":"https:\/\/aslihankaratas.com\/"},{"@type":"ListItem","position":2,"name":"PHP&#8217;de Sabitler"}]},{"@type":"WebSite","@id":"https:\/\/aslihankaratas.com\/#website","url":"https:\/\/aslihankaratas.com\/","name":"ASLIHAN KARATA\u015e","description":"Lecturer","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/aslihankaratas.com\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"tr"},{"@type":"Person","@id":"https:\/\/aslihankaratas.com\/#\/schema\/person\/28b7a61160b8d1bb18a217d5f1e856d4","name":"aslihankaratas","image":{"@type":"ImageObject","inLanguage":"tr","@id":"https:\/\/aslihankaratas.com\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/9b9ff8326f9ce8f3ae3e5c45df92cb1c62be24345bd251cd5a84bbe607b592b7?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/9b9ff8326f9ce8f3ae3e5c45df92cb1c62be24345bd251cd5a84bbe607b592b7?s=96&d=mm&r=g","caption":"aslihankaratas"},"sameAs":["http:\/\/aslihankaratas.com"],"url":"https:\/\/aslihankaratas.com\/index.php\/author\/aslihankaratas\/"}]}},"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/aslihankaratas.com\/index.php\/wp-json\/wp\/v2\/posts\/201","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aslihankaratas.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aslihankaratas.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aslihankaratas.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aslihankaratas.com\/index.php\/wp-json\/wp\/v2\/comments?post=201"}],"version-history":[{"count":1,"href":"https:\/\/aslihankaratas.com\/index.php\/wp-json\/wp\/v2\/posts\/201\/revisions"}],"predecessor-version":[{"id":202,"href":"https:\/\/aslihankaratas.com\/index.php\/wp-json\/wp\/v2\/posts\/201\/revisions\/202"}],"wp:attachment":[{"href":"https:\/\/aslihankaratas.com\/index.php\/wp-json\/wp\/v2\/media?parent=201"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aslihankaratas.com\/index.php\/wp-json\/wp\/v2\/categories?post=201"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aslihankaratas.com\/index.php\/wp-json\/wp\/v2\/tags?post=201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}