{"id":173,"date":"2016-07-20T10:40:28","date_gmt":"2016-07-20T10:40:28","guid":{"rendered":"https:\/\/barkhane.com\/php\/2016\/07\/20\/php-variable-deceleration\/"},"modified":"2024-03-03T15:04:15","modified_gmt":"2024-03-03T15:04:15","slug":"php-variable-deceleration","status":"publish","type":"post","link":"https:\/\/barkhane.com\/php\/php-variable-deceleration\/","title":{"rendered":"PHP Variable Deceleration"},"content":{"rendered":"

Declare Variable in PHP ?<\/h2>\n

PHP Variable Deceleration : The Meaning of variable is\u00a0not consistent or not having a fixed pattern,it is \u00a0liable to change. In PHP \u00a0<\/a>way to store information in \u00a0PHP<\/b> program is by using a variable<\/b>.\u00a0All variables in PHP<\/b>\u00a0having\u00a0prefix\u00a0\u00a0a dollar sign ($). The value of a variable<\/b> is the value of its most recent assignment ,Variable name must follow rules for an identifier and should not start with Number<\/strong>.variable can store any type of information depends on the datatype<\/a> of variable , it can store numeric , string, Boolean,Array, etc …<\/p>\n

Eg.<\/p>\n

\n$a= 10;\n\n$name=\\\"Sourabh\\\";\n\n$flag=\\\"True\\\";\n\n$date=\\\"12\/june\/2016\\\";<\/code><\/pre>\n
Eligibility to be a\u00a0Variable in php ?<\/h2>\n
    \n
  • A PHP variable starts with the $ sign, followed by the name of the variable<\/li>\n
  • A PHP variable name must start with a letter<\/strong> or the underscore<\/strong> character<\/li>\n
  • A PHP variable name cannot start with a number<\/strong><\/li>\n
  • A PHP variable name can only contain alpha-numeric characters and underscores<\/strong> (A-z, 0-9, and _ )<\/li>\n
  • PHP Variable names are case-sensitive<\/strong> ($php and $PHP are two different variables)<\/li>\n<\/ul>\n
    Scope of PHP Variables<\/h2>\n
    The scope of a variable is the part of the script where the variable can be referenced\/used.
    \nPHP has three different variable scopes:<\/p>\n
      \n
    1. Local<\/li>\n
    2. Global<\/li>\n
    3. Static<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
      Declare Variable in PHP ? PHP Variable Deceleration : The Meaning of variable is\u00a0not consistent or not having a fixed […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"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":""},"categories":[3],"tags":[],"class_list":["post-173","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/barkhane.com\/php\/wp-json\/wp\/v2\/posts\/173","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/barkhane.com\/php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/barkhane.com\/php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/barkhane.com\/php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/barkhane.com\/php\/wp-json\/wp\/v2\/comments?post=173"}],"version-history":[{"count":0,"href":"https:\/\/barkhane.com\/php\/wp-json\/wp\/v2\/posts\/173\/revisions"}],"wp:attachment":[{"href":"https:\/\/barkhane.com\/php\/wp-json\/wp\/v2\/media?parent=173"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/barkhane.com\/php\/wp-json\/wp\/v2\/categories?post=173"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/barkhane.com\/php\/wp-json\/wp\/v2\/tags?post=173"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}