{"id":10125,"date":"2026-10-26T09:20:00","date_gmt":"2026-10-26T06:20:00","guid":{"rendered":"https:\/\/www.yunuskaytan.com\/?p=10125"},"modified":"2026-10-26T09:20:00","modified_gmt":"2026-10-26T06:20:00","slug":"php-de-dizi-array-kullanimi","status":"publish","type":"post","link":"https:\/\/www.yunuskaytan.com\/en\/yk\/php-de-dizi-array-kullanimi\/","title":{"rendered":"PHP&#8217;de Dizi (array) Kullan\u0131m\u0131"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Modern web uygulamalar\u0131 geli\u015ftirirken kullan\u0131c\u0131 listeleri, form girdileri, \u00fcr\u00fcn kataloglar\u0131 veya veritaban\u0131 kay\u0131tlar\u0131 gibi birden fazla veriyi tek bir yap\u0131 alt\u0131nda toplamak gerekir. PHP programlama dilinde bu t\u00fcr \u00e7oklu veri gruplar\u0131n\u0131 bellekte organize etmek i\u00e7in diziler (arrays) kullan\u0131l\u0131r. Bu rehberde, PHP dizi yap\u0131s\u0131n\u0131 s\u0131f\u0131rdan ele alacak; dizi t\u00fcrlerini, bu yap\u0131lar \u00fczerinde i\u015flem yapmay\u0131 ve s\u0131k kullan\u0131lan fonksiyonlar\u0131 inceleyece\u011fiz.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Dizi (Array) Nedir ve Neden Kullan\u0131l\u0131r?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dizi, tek bir de\u011fi\u015fken ad\u0131 alt\u0131nda birden fazla de\u011feri saklamaya yarayan \u00f6zel bir veri yap\u0131s\u0131d\u0131r. Normal bir de\u011fi\u015fkende yaln\u0131zca tek bir veri (\u00f6rne\u011fin bir metin veya say\u0131) tutulabilirken, diziler farkl\u0131 veri t\u00fcrlerinden y\u00fczlerce veya binlerce eleman\u0131 ayn\u0131 anda bar\u0131nd\u0131rabilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Diziler, verileri d\u00fczenli tutmay\u0131 ve bu veriler \u00fczerinde toplu i\u015flemler (s\u0131ralama, filtreleme, arama) yapmay\u0131 kolayla\u015ft\u0131r\u0131r. PHP&#8217;de bir dizi i\u00e7inde string, integer, float, boolean ve hatta ba\u015fka diziler bir arada bulunabilir. PHP bu konuda dinamik ve esnek bir yap\u0131 sunar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PHP&#8217;de Dizi Tan\u0131mlama Y\u00f6ntemleri<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PHP&#8217;de dizi olu\u015fturmak i\u00e7in iki temel s\u00f6zdizimi kullan\u0131l\u0131r. \u0130lki klasik <code>array()<\/code> fonksiyonu, ikincisi ise PHP 5.4 ile hayat\u0131m\u0131za giren ve modern kod tabanlar\u0131nda yayg\u0131n olarak tercih edilen k\u00f6\u015feli parantez <code>[]<\/code> s\u00f6zdizimidir.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$diller_eski = array(\"PHP\", \"Python\", \"JavaScript\");\n$diller_yeni = [\"PHP\", \"Python\", \"JavaScript\"];<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Yukar\u0131daki \u00f6rnekte her iki de\u011fi\u015fken de ayn\u0131 veri k\u00fcmesini ta\u015f\u0131r. Modern PHP standartlar\u0131nda k\u00f6\u015feli parantez kullan\u0131m\u0131 daha temiz ve okunabilir kabul edilir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PHP Dizi T\u00fcrleri<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PHP&#8217;de diziler yap\u0131sal \u00f6zelliklerine ve verileri tutma bi\u00e7imlerine g\u00f6re \u00fc\u00e7 ana gruba ayr\u0131l\u0131r.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u0130ndeksli Diziler (Indexed Arrays)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0130ndeksli dizilerde her elemana say\u0131sal bir indeks (s\u0131ra numaras\u0131) atan\u0131r. PHP&#8217;de varsay\u0131lan olarak indeksler s\u0131f\u0131rdan (0) ba\u015flar.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$sunucular = [\"Web\", \"Veritabani\", \"DNS\"];\n\necho $sunucular[0];\necho $sunucular[2];<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Bu \u00f6rnekte <code>$sunucular[0]<\/code> ifadesi listenin ilk eleman\u0131 olan &#8220;Web&#8221; de\u011ferini, <code>$sunucular[2]<\/code> ifadesi ise \u00fc\u00e7\u00fcnc\u00fc s\u0131radaki &#8220;DNS&#8221; de\u011ferini ekrana yazd\u0131r\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mevcut bir indeksli diziye yeni bir eleman eklemek i\u00e7in \u015fu y\u00f6ntem kullan\u0131l\u0131r:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$sunucular[] = \"Mail\";<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Bu komut, &#8220;Mail&#8221; de\u011ferini dizinin en sonuna otomatik olarak yeni bir indeksle ekler.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u0130li\u015fkisel Diziler (Associative Arrays)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0130li\u015fkisel diziler, say\u0131sal indeksler yerine adland\u0131r\u0131lm\u0131\u015f anahtarlar (keys) kullanan anahtar-de\u011fer (key-value) \u00e7iftleridir. Verilerin ne anlama geldi\u011fini netle\u015ftirmek istedi\u011fimizde ili\u015fkisel diziler kullan\u0131l\u0131r.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$kullanici = [\n    \"ad\" =&gt; \"Yunus\",\n    \"rol\" =&gt; \"Guvenlik Uzmani\",\n    \"deneyim_yili\" =&gt; 5,\n    \"aktif\" =&gt; true\n];\n\necho $kullanici[\"ad\"];\necho $kullanici[\"rol\"];<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Burada her bir de\u011fere kendine ait anlaml\u0131 bir metin anahtar\u0131 atanm\u0131\u015ft\u0131r. <code>$kullanici[\"ad\"]<\/code> \u00e7a\u011fr\u0131ld\u0131\u011f\u0131nda do\u011frudan &#8220;Yunus&#8221; sonucuna ula\u015f\u0131l\u0131r.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u00c7ok Boyutlu Diziler (Multidimensional Arrays)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Bir dizinin i\u00e7inde ba\u015fka bir dizi veya diziler bulunuyorsa bu yap\u0131ya \u00e7ok boyutlu dizi denir. Matris yap\u0131lar\u0131n\u0131, ili\u015fkili veritaban\u0131 sonu\u00e7lar\u0131n\u0131 veya karma\u015f\u0131k veri a\u011fa\u00e7lar\u0131n\u0131 saklamak i\u00e7in idealdir.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$kullanicilar = [\n    [\n        \"ad\" =&gt; \"Ahmet\",\n        \"eposta\" =&gt; \"ahmet@ornek.com\"\n    ],\n    [\n        \"ad\" =&gt; \"Mehmet\",\n        \"eposta\" =&gt; \"mehmet@ornek.com\"\n    ]\n];\n\necho $kullanicilar[0][\"ad\"];\necho $kullanicilar[1][\"eposta\"];<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0130lk sat\u0131r birinci alt dizinin &#8220;ad&#8221; bilgisini, ikinci sat\u0131r ise ikinci alt dizinin &#8220;eposta&#8221; bilgisini verir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PHP Dizi Elemanlar\u0131n\u0131 D\u00f6ng\u00fcyle \u0130\u015fleme<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dizilerdeki verileri listelemek veya her eleman \u00fczerinde tek tek i\u015flem yapmak i\u00e7in en yayg\u0131n kullan\u0131lan yap\u0131 <code>foreach<\/code> d\u00f6ng\u00fcs\u00fcd\u00fcr.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0130ndeksli bir diziyi d\u00f6nmek i\u00e7in \u015fu yap\u0131 kullan\u0131l\u0131r:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$portlar = [22, 80, 443, 8080];\n\nforeach ($portlar as $port) {\n    echo \"Port: \" . $port . \"n\";\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0130li\u015fkisel bir dizide hem anahtara hem de de\u011fere eri\u015fmek istiyorsak \u015fu s\u00f6zdiziminden yararlan\u0131r\u0131z:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$sistem_bilgisi = [\n    \"OS\" =&gt; \"Linux\",\n    \"Kernel\" =&gt; \"5.15\",\n    \"Uptime\" =&gt; \"12 gun\"\n];\n\nforeach ($sistem_bilgisi as $anahtar =&gt; $deger) {\n    echo $anahtar . \": \" . $deger . \"n\";\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Bu d\u00f6ng\u00fc, dizideki t\u00fcm sat\u0131rlar\u0131 s\u0131rayla gezer ve her anahtar-de\u011fer ikilisini ayr\u0131\u015ft\u0131rarak \u00e7\u0131kt\u0131 verir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">S\u0131k Kullan\u0131lan PHP Dizi Fonksiyonlar\u0131<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PHP, dizileri y\u00f6netmek ve manip\u00fcle etmek i\u00e7in yerle\u015fik y\u00fczlerce fonksiyona sahiptir. G\u00fcnl\u00fck geli\u015ftirmelerde en s\u0131k ihtiya\u00e7 duyulan temel fonksiyonlar \u015funlard\u0131r:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Eleman Say\u0131s\u0131n\u0131 Bulma: count()<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Bir dizinin i\u00e7inde ka\u00e7 adet eleman bulundu\u011funu d\u00f6nd\u00fcr\u00fcr.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$loglar = [\"Hata 1\", \"Hata 2\", \"Uyari 1\"];\n$toplam = count($loglar);\necho $toplam;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Eleman Ekleme ve \u00c7\u0131karma: array_push() ve array_pop()<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Dizinin sonuna bir veya daha fazla eleman eklemek ya da sonundaki eleman\u0131 diziden \u00e7\u0131karmak i\u00e7in kullan\u0131l\u0131r.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$sayilar = [10, 20, 30];\n\narray_push($sayilar, 40);\n$son_eleman = array_pop($sayilar);<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><code>array_push()<\/code> diziye 40 de\u011ferini ekler, ard\u0131ndan gelen <code>array_pop()<\/code> ise dizinin sonundaki 40 de\u011ferini diziden \u00e7\u0131kar\u0131p de\u011fi\u015fkene atar.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Eleman Arama: in_array()<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Belirli bir de\u011ferin dizi i\u00e7erisinde var olup olmad\u0131\u011f\u0131n\u0131 kontrol eder. Sonu\u00e7 olarak mant\u0131ksal (boolean) <code>true<\/code> veya <code>false<\/code> d\u00f6ner.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$izin_verilenler = [\"admin\", \"editor\", \"moderator\"];\n\nif (in_array(\"admin\", $izin_verilenler)) {\n    echo \"Erisim onaylandi.\";\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Dizileri Birle\u015ftirme: array_merge()<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0130ki veya daha fazla diziyi tek bir dizi haline getirir.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$grup_a = [\"A1\", \"A2\"];\n$grup_b = [\"B1\", \"B2\"];\n\n$tum_gruplar = array_merge($grup_a, $grup_b);<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Anahtar ve De\u011ferleri Ayr\u0131\u015ft\u0131rma: array_keys() ve array_values()<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0130li\u015fkisel dizilerdeki anahtarlar\u0131 veya de\u011ferleri ba\u011f\u0131ms\u0131z bir indeksli dizi olarak almak i\u00e7in kullan\u0131l\u0131r.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ayarlar = [\"tema\" =&gt; \"koyu\", \"dil\" =&gt; \"tr\"];\n\n$anahtarlar = array_keys($ayarlar);\n$degerler = array_values($ayarlar);<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Dizilerde G\u00fcvenlik ve Temiz Kod \u00d6nerileri<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dizilerle \u00e7al\u0131\u015f\u0131rken kar\u015f\u0131la\u015f\u0131lan en yayg\u0131n hata, dizide tan\u0131ml\u0131 olmayan bir anahtara eri\u015fmeye \u00e7al\u0131\u015fmakt\u0131r (<code>Undefined array key<\/code> uyar\u0131s\u0131). Bu t\u00fcr hatalar\u0131n \u00f6n\u00fcne ge\u00e7mek i\u00e7in \u015fu kurallara dikkat edilmelidir:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bir anahtara eri\u015fmeden \u00f6nce <code>isset()<\/code> veya <code>array_key_exists()<\/code> fonksiyonlar\u0131yla anahtar\u0131n varl\u0131\u011f\u0131 denetlenmelidir.<\/li>\n\n<li>PHP 7.0 ile gelen null birle\u015fim i\u015fleci (<code>??<\/code>) kullan\u0131larak varsay\u0131lan de\u011ferler atanmal\u0131d\u0131r. \u00d6rne\u011fin: <code>$kullanici_adi = $kullanici['ad'] ?? 'Misafir';<\/code><\/li>\n\n<li>D\u0131\u015f kaynaktan (GET, POST parametreleri gibi) gelen diziler do\u011frudan i\u015flenmemeli, veri t\u00fcrleri ve i\u00e7erikleri do\u011frulanmal\u0131d\u0131r.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u00d6zet ve Sonraki Ad\u0131mlar<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PHP&#8217;de diziler, karma\u015f\u0131k veri y\u0131\u011f\u0131nlar\u0131n\u0131 y\u00f6netilebilir ve anlaml\u0131 hale getiren en temel veri tiplerindendir. \u0130ndeksli diziler s\u0131ral\u0131 veriler i\u00e7in, ili\u015fkisel diziler kimliklendirilmi\u015f veriler i\u00e7in, \u00e7ok boyutlu diziler ise hiyerar\u015fik yap\u0131lar i\u00e7in idealdir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bir sonraki ad\u0131m olarak <code>array_map()<\/code>, <code>array_filter()<\/code> ve <code>array_reduce()<\/code> gibi fonksiyonel programlama odakl\u0131 geli\u015fmi\u015f PHP dizi fonksiyonlar\u0131n\u0131 inceleyebilir ve veri manip\u00fclasyon becerilerinizi ilerletebilirsiniz.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP programlama dilinde verileri organize etmenin temel yap\u0131 ta\u015f\u0131 olan diziler hakk\u0131nda bilmeniz gerekenler ve pratik kullan\u0131m \u00f6rnekleri.<\/p>","protected":false},"author":1,"featured_media":10126,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[301],"tags":[213,307,214,302,264],"class_list":["post-10125","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php","tag-php","tag-php-dizi","tag-programlama","tag-web-gelistirme","tag-yazilim"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PHP&#039;de Dizi (array) Kullan\u0131m\u0131 - Yunus KAYTAN<\/title>\n<meta name=\"description\" content=\"PHP&#039;de dizi (array) yap\u0131s\u0131n\u0131, t\u00fcrlerini, d\u00f6ng\u00fcleri ve temel dizi fonksiyonlar\u0131n\u0131 \u00f6rneklerle \u00f6\u011frenin. 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