{"id":257,"date":"2016-07-28T08:45:08","date_gmt":"2016-07-28T08:45:08","guid":{"rendered":"https:\/\/barkhane.com\/php\/2016\/07\/28\/php-variable-built-in-functions\/"},"modified":"2024-03-03T15:01:43","modified_gmt":"2024-03-03T15:01:43","slug":"php-variable-built-in-functions","status":"publish","type":"post","link":"https:\/\/barkhane.com\/php\/php-variable-built-in-functions\/","title":{"rendered":"PHP Variable Built in Functions"},"content":{"rendered":"

What is Variable handling Functions in PHP ?<\/h1>\n

Variable handling function in PHP<\/a> \u00a0are those function which maintain the property of \u00a0variable\u00a0and check for it,whether value of variable is correct or not according to requirement. There are various function for variable handling list is Given below .where $var is a\u00a0variable<\/a><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
boolval($var)<\/td>\nGet the boolean value of a \u00a0variable<\/a><\/td>\n<\/tr>\n
debug_zval_dump($var)<\/td>\nDumps a string representation of an internal zend value to output<\/td>\n<\/tr>\n
doubleval($var)<\/td>\nAlias of floatval<\/td>\n<\/tr>\n
empty($var)<\/td>\nDetermine whether a\u00a0\u00a0variable<\/a> \u00a0is empty<\/td>\n<\/tr>\n
floatval($var)<\/td>\nGet float value of a \u00a0variable<\/a><\/td>\n<\/tr>\n
get_defined_vars($var)<\/td>\nReturns an array of all defined \u00a0variable<\/a><\/td>\n<\/tr>\n
get_resource_type($var)<\/td>\nReturns the resource type<\/td>\n<\/tr>\n
gettype($var)<\/td>\nGet the type of a \u00a0variable<\/a><\/td>\n<\/tr>\n
import_request_variables<\/td>\nImport GET\/POST\/Cookie\u00a0\u00a0variable<\/a> \u00a0into the global scope<\/td>\n<\/tr>\n
ntval($var)<\/td>\ni Get the integer value of a \u00a0variable<\/a><\/td>\n<\/tr>\n
is_array($var)<\/td>\nFinds whether a\u00a0\u00a0variable<\/a> \u00a0is an array<\/td>\n<\/tr>\n
is_bool($var)<\/td>\nFinds out whether a \u00a0variable<\/a>\u00a0is a boolean<\/td>\n<\/tr>\n
is_callable($var)<\/td>\nVerify that the contents of a\u00a0\u00a0variable<\/a> can be called as a function<\/td>\n<\/tr>\n
is_double($var)<\/td>\nAlias of is_float<\/td>\n<\/tr>\n
is_float($var)<\/td>\nFinds whether the type of a \u00a0variable<\/a>\u00a0is float<\/td>\n<\/tr>\n
is_int($var)<\/td>\nFind whether the type of a \u00a0variable\u00a0is integer<\/td>\n<\/tr>\n
is_integer($var)<\/td>\nAlias of is_int<\/td>\n<\/tr>\n
is_long($var)<\/td>\nAlias of is_int<\/td>\n<\/tr>\n
is_null($var)<\/td>\nFinds whether a\u00a0\u00a0variable \u00a0is NULL<\/td>\n<\/tr>\n
is_numeric($var)<\/td>\nFinds whether a\u00a0\u00a0variable \u00a0is a number or a numeric string<\/td>\n<\/tr>\n
is_object($var)<\/td>\nFinds whether a\u00a0 \u00a0variable\u00a0is an object<\/td>\n<\/tr>\n
is_real($var)<\/td>\nAlias of is_float<\/td>\n<\/tr>\n
is_resource($var)<\/td>\nFinds whether a\u00a0\u00a0variable \u00a0is a resource<\/td>\n<\/tr>\n
is_scalar($var)<\/td>\nFinds whether a\u00a0\u00a0variable \u00a0is a scalar<\/td>\n<\/tr>\n
is_string($var)<\/td>\nFind whether the type of a\u00a0\u00a0variable \u00a0is string<\/td>\n<\/tr>\n
isset($var)<\/td>\nDetermine if a\u00a0\u00a0variable \u00a0is set and is not NULL<\/td>\n<\/tr>\n
print_r($var)<\/td>\nPrints human-readable information about a \u00a0variable<\/td>\n<\/tr>\n
serialize($var)<\/td>\nGenerates a storable representation of a value<\/td>\n<\/tr>\n
settype($var)<\/td>\nSet the type of a \u00a0variable<\/td>\n<\/tr>\n
strval($var)<\/td>\nGet string value of a \u00a0variable<\/td>\n<\/tr>\n
unserialize($var)<\/td>\nCreates a PHP value from a stored representation<\/td>\n<\/tr>\n
unset($var)<\/td>\nUnset a given \u00a0variable<\/td>\n<\/tr>\n
var_dump($var)<\/td>\nDumps information about a \u00a0variable<\/td>\n<\/tr>\n
var_export($var)<\/td>\nOutputs or returns a parsable string representation of a \u00a0variable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

What is Variable handling Functions in PHP ? Variable handling function in PHP \u00a0are those function which maintain the property […]<\/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-257","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/barkhane.com\/php\/wp-json\/wp\/v2\/posts\/257","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=257"}],"version-history":[{"count":0,"href":"https:\/\/barkhane.com\/php\/wp-json\/wp\/v2\/posts\/257\/revisions"}],"wp:attachment":[{"href":"https:\/\/barkhane.com\/php\/wp-json\/wp\/v2\/media?parent=257"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/barkhane.com\/php\/wp-json\/wp\/v2\/categories?post=257"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/barkhane.com\/php\/wp-json\/wp\/v2\/tags?post=257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}