{"id":5099,"date":"2025-11-28T17:25:27","date_gmt":"2025-11-28T16:25:27","guid":{"rendered":"https:\/\/sutilweb.eu\/?page_id=5099"},"modified":"2025-11-28T17:25:27","modified_gmt":"2025-11-28T16:25:27","slug":"10-estructuras-repetitivas-while-o-do-while","status":"publish","type":"page","link":"https:\/\/sutilweb.eu\/index.php\/lenguajes\/php\/php-practico\/10-estructuras-repetitivas-while-o-do-while\/","title":{"rendered":"10. Estructuras repetitivas while o do while"},"content":{"rendered":"\n<p>En este cap\u00edtulo hablaremos sobre otro tipo de estructura denominada&nbsp;<strong>estructura repetitiva&nbsp;<\/strong>o&nbsp;<strong>bucle<\/strong>. Este tipo lo vamos a utilizar cuando queramos que una misma porci\u00f3n de c\u00f3digo se ejecute varias veces.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bucle while<\/h2>\n\n\n\n<p>En el bucle&nbsp;tenemos que haber definido una condici\u00f3n, el int\u00e9rprete lo que hace es verificar esa condici\u00f3n, si se cumple se ejecutar\u00e1 un bloque de c\u00f3digo. Hasta aqu\u00ed se parece a lo que hemos venido viendo en cap\u00edtulos anteriores cuando ve\u00edamos las condicionales, la diferencia es que luego de ejecutar este bloque de c\u00f3digo vuelve a ejecutar la condici\u00f3n, si se vuelve a cumplir se vuelve a ejecutar este bloque de c\u00f3digo, as\u00ed hasta que llegue un punto en el que la condici\u00f3n no se cumpla, cuando llegue ese momento, va a salir del bucle y va a seguir con el flujo del programa.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Esquema<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"474\" height=\"584\" src=\"https:\/\/sutilweb.eu\/wp-content\/uploads\/2025\/11\/Bucle-while.png\" alt=\"\" class=\"wp-image-5102\" style=\"width:213px;height:auto\" srcset=\"https:\/\/sutilweb.eu\/wp-content\/uploads\/2025\/11\/Bucle-while.png 474w, https:\/\/sutilweb.eu\/wp-content\/uploads\/2025\/11\/Bucle-while-243x300.png 243w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><\/figure>\n\n\n\n<p><strong>Ejm<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\n$i = 1;\n\n  \/\/ Bucle while\n\nwhile ($i &lt; 10) {\n    echo \"El valor de i es: &lt;b> $i &lt;\/b>&lt;br \/>\";\n    $i++;\n}\n\necho \"Has salido del bucle\";<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Bucle do while<\/h2>\n\n\n\n<p>Si queremos que nuestro bucle se ejecute por lo menos una vez podemos utilizar esta variante del bucle <strong><em>while<\/em><\/strong> de la siguiente forma.<\/p>\n\n\n\n<p><strong>Ejm<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\n\/\/ Bucle do while\n\n$j = 10;\n\ndo {\n    echo \"El valor de i es: &lt;b> $j &lt;\/b>&lt;br \/>\";\n    $j++;\n} while ($j &lt; 10);<\/code><\/pre>\n\n\n\n<p>Veamos otro ejemplo para entender el uso de este tipo de estructuras.<\/p>\n\n\n\n<p><strong>Ejm<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\n\/\/ Ejercicio completo\n\n$base = 2;\n$exp = 5;\n\n$resultado = 1;\n$i = 1;\n\n\/\/ 2 * 2 * 2 * 2 * 2\n\nwhile ($i &lt;= $exp) {\n    $resultado *= $base;\n    $i++;\n}\n\necho \"El valor de $base elevado a $exp es: $resultado\";<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>En este cap\u00edtulo hablaremos sobre otro tipo de estructura denominada&nbsp;estructura repetitiva&nbsp;o&nbsp;bucle. Este tipo lo vamos a utilizar cuando queramos que [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":4518,"menu_order":9,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-5099","page","type-page","status-publish","hentry"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false},"uagb_author_info":{"display_name":"Sutil Web","author_link":"https:\/\/sutilweb.eu\/index.php\/author\/sutilweb\/"},"uagb_comment_info":0,"uagb_excerpt":"En este cap\u00edtulo hablaremos sobre otro tipo de estructura denominada&nbsp;estructura repetitiva&nbsp;o&nbsp;bucle. Este tipo lo vamos a utilizar cuando queramos que [&hellip;]","_links":{"self":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/5099","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/comments?post=5099"}],"version-history":[{"count":5,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/5099\/revisions"}],"predecessor-version":[{"id":5105,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/5099\/revisions\/5105"}],"up":[{"embeddable":true,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/4518"}],"wp:attachment":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/media?parent=5099"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}