{"id":3029,"date":"2012-07-05T13:52:39","date_gmt":"2012-07-05T13:52:39","guid":{"rendered":"https:\/\/www.jose-aguilar.com\/blog\/?p=3029"},"modified":"2012-08-30T18:32:28","modified_gmt":"2012-08-30T18:32:28","slug":"comparar-cadenas-con-php","status":"publish","type":"post","link":"https:\/\/www.jose-aguilar.com\/blog\/comparar-cadenas-con-php\/","title":{"rendered":"Comparar cadenas con PHP"},"content":{"rendered":"<p><a href=\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/uploads\/2012\/07\/source-php-icon.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-4491\" title=\"source-php-icon\" src=\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/uploads\/2012\/07\/source-php-icon.png\" alt=\"\" width=\"128\" height=\"128\" srcset=\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/uploads\/2012\/07\/source-php-icon.png 128w, https:\/\/www.jose-aguilar.com\/blog\/wp-content\/uploads\/2012\/07\/source-php-icon-80x80.png 80w\" sizes=\"auto, (max-width: 128px) 100vw, 128px\" \/><\/a>Comparar cadenas en php no es tan f\u00e1cil como hacerlo con n\u00fameros. Si examinamos una cadena bas\u00e1ndonos en su forma binaria, \u201cJose\u201d y \u201cjose\u201d son completamente diferentes.<\/p>\n<p>Para comparar cadenas en PHP podemos utlizar la funci\u00f3n:<\/p>\n<pre>int <strong>strcmp<\/strong>(string $str2, string $str2)<\/pre>\n<p>Esta funci\u00f3n compara\u00a0 2 string de forma segura a nivel binario.<\/p>\n<p>Como par\u00e1metros recibe las 2 cadenas a comparar.<\/p>\n<p>Devuelve &lt; 0 si \u00abstr1\u00bb es menor que \u00abstr2\u00bb, &gt; 0 si \u00abstr1\u00bb es mayor que \u00abstr2\u00bb y 0 si son iguales.<\/p>\n<p>Hay que tener en cuenta que esta comparaci\u00f3n es sensible a may\u00fasculas y min\u00fasculas.<\/p>\n<p>Para comparar una cadena teniendo en cuenta esta sensibilidad tenemos que utilizar la siguiente funci\u00f3n:<\/p>\n<pre>int <strong>strcasecmp<\/strong> (string $str1, string $str2)<\/pre>\n<p>Funciona igual que la anterior funci\u00f3n, la \u00fanica diferencia es que esta \u00faltima es insensible a may\u00fasculas y min\u00fasculas.<\/p>\n<pre>&lt;?php\r\n$var1 = \"Hello\";\r\n$var2 = \"hello\";\r\nif (strcasecmp($var1, $var2) == 0) {\r\n\u00a0\u00a0\u00a0 echo '$var1 is equal to $var2 in a case-insensitive string comparison';\r\n}\r\n?&gt;<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Comparar cadenas en php no es tan f\u00e1cil como hacerlo con n\u00fameros. Si examinamos una cadena bas\u00e1ndonos en su forma binaria, \u201cJose\u201d y \u201cjose\u201d son completamente diferentes. Para comparar cadenas en PHP podemos utlizar la funci\u00f3n: int strcmp(string $str2, string $str2) Esta funci\u00f3n compara\u00a0 2 string de forma segura a nivel binario. Como par\u00e1metros recibe [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4491,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[141],"class_list":["post-3029","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php","tag-cadenas"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Comparar cadenas con PHP - Jose Aguilar Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Comparar cadenas con PHP - Jose Aguilar Blog\" \/>\n<meta property=\"og:description\" content=\"Comparar cadenas en php no es tan f\u00e1cil como hacerlo con n\u00fameros. Si examinamos una cadena bas\u00e1ndonos en su forma binaria, \u201cJose\u201d y \u201cjose\u201d son completamente diferentes. Para comparar cadenas en PHP podemos utlizar la funci\u00f3n: int strcmp(string $str2, string $str2) Esta funci\u00f3n compara\u00a0 2 string de forma segura a nivel binario. Como par\u00e1metros recibe [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.jose-aguilar.com\/blog\/comparar-cadenas-con-php\/\" \/>\n<meta property=\"og:site_name\" content=\"Jose Aguilar Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/joseaguilarblog\" \/>\n<meta property=\"article:published_time\" content=\"2012-07-05T13:52:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2012-08-30T18:32:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/uploads\/2012\/07\/source-php-icon.png\" \/>\n\t<meta property=\"og:image:width\" content=\"128\" \/>\n\t<meta property=\"og:image:height\" content=\"128\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Jose Aguilar\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@JoseAguilarBlog\" \/>\n<meta name=\"twitter:site\" content=\"@JoseAguilarBlog\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jose Aguilar\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minuto\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.jose-aguilar.com\/blog\/comparar-cadenas-con-php\/\",\"url\":\"https:\/\/www.jose-aguilar.com\/blog\/comparar-cadenas-con-php\/\",\"name\":\"Comparar cadenas con PHP - Jose Aguilar Blog\",\"isPartOf\":{\"@id\":\"https:\/\/www.jose-aguilar.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.jose-aguilar.com\/blog\/comparar-cadenas-con-php\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.jose-aguilar.com\/blog\/comparar-cadenas-con-php\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/uploads\/2012\/07\/source-php-icon.png\",\"datePublished\":\"2012-07-05T13:52:39+00:00\",\"dateModified\":\"2012-08-30T18:32:28+00:00\",\"author\":{\"@id\":\"https:\/\/www.jose-aguilar.com\/blog\/#\/schema\/person\/e6d485db1e1140866e95971d17105d11\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.jose-aguilar.com\/blog\/comparar-cadenas-con-php\/#breadcrumb\"},\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.jose-aguilar.com\/blog\/comparar-cadenas-con-php\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\/\/www.jose-aguilar.com\/blog\/comparar-cadenas-con-php\/#primaryimage\",\"url\":\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/uploads\/2012\/07\/source-php-icon.png\",\"contentUrl\":\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/uploads\/2012\/07\/source-php-icon.png\",\"width\":128,\"height\":128},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.jose-aguilar.com\/blog\/comparar-cadenas-con-php\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Portada\",\"item\":\"https:\/\/www.jose-aguilar.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Comparar cadenas con PHP\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.jose-aguilar.com\/blog\/#website\",\"url\":\"https:\/\/www.jose-aguilar.com\/blog\/\",\"name\":\"Jose Aguilar Blog\",\"description\":\"Desarrollo Web con PrestaShop, WordPress, PHP, jQuery y Ajax\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.jose-aguilar.com\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"es\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.jose-aguilar.com\/blog\/#\/schema\/person\/e6d485db1e1140866e95971d17105d11\",\"name\":\"Jose Aguilar\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\/\/www.jose-aguilar.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/abbfef5f1d75260c549d0f2c2842bb697ba1aadff3b2836b39d2590c8a625415?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/abbfef5f1d75260c549d0f2c2842bb697ba1aadff3b2836b39d2590c8a625415?s=96&d=mm&r=g\",\"caption\":\"Jose Aguilar\"},\"description\":\"Director ejecutivo y tecnol\u00f3gico en JA Modules. 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