<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Variable handling Functions</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="var.constants.html">Predefined Constants</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.boolval.html">boolval</a></div> <div class="up"><a href="book.var.html">Variable handling</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="ref.var" class="reference"> <h1 class="title">Variable handling Functions</h1> <h2>Table of Contents</h2><ul class="chunklist chunklist_reference"><li><a href="function.boolval.html">boolval</a> — Get the boolean value of a variable</li><li><a href="function.debug-zval-dump.html">debug_zval_dump</a> — Dumps a string representation of an internal zend value to output</li><li><a href="function.doubleval.html">doubleval</a> — Alias of floatval</li><li><a href="function.empty.html">empty</a> — Determine whether a variable is empty</li><li><a href="function.floatval.html">floatval</a> — Get float value of a variable</li><li><a href="function.get-defined-vars.html">get_defined_vars</a> — Returns an array of all defined variables</li><li><a href="function.get-resource-type.html">get_resource_type</a> — Returns the resource type</li><li><a href="function.gettype.html">gettype</a> — Get the type of a variable</li><li><a href="function.import-request-variables.html">import_request_variables</a> — Import GET/POST/Cookie variables into the global scope</li><li><a href="function.intval.html">intval</a> — Get the integer value of a variable</li><li><a href="function.is-array.html">is_array</a> — Finds whether a variable is an array</li><li><a href="function.is-bool.html">is_bool</a> — Finds out whether a variable is a boolean</li><li><a href="function.is-callable.html">is_callable</a> — Verify that the contents of a variable can be called as a function</li><li><a href="function.is-double.html">is_double</a> — Alias of is_float</li><li><a href="function.is-float.html">is_float</a> — Finds whether the type of a variable is float</li><li><a href="function.is-int.html">is_int</a> — Find whether the type of a variable is integer</li><li><a href="function.is-integer.html">is_integer</a> — Alias of is_int</li><li><a href="function.is-long.html">is_long</a> — Alias of is_int</li><li><a href="function.is-null.html">is_null</a> — Finds whether a variable is NULL</li><li><a href="function.is-numeric.html">is_numeric</a> — Finds whether a variable is a number or a numeric string</li><li><a href="function.is-object.html">is_object</a> — Finds whether a variable is an object</li><li><a href="function.is-real.html">is_real</a> — Alias of is_float</li><li><a href="function.is-resource.html">is_resource</a> — Finds whether a variable is a resource</li><li><a href="function.is-scalar.html">is_scalar</a> — Finds whether a variable is a scalar</li><li><a href="function.is-string.html">is_string</a> — Find whether the type of a variable is string</li><li><a href="function.isset.html">isset</a> — Determine if a variable is set and is not NULL</li><li><a href="function.print-r.html">print_r</a> — Prints human-readable information about a variable</li><li><a href="function.serialize.html">serialize</a> — Generates a storable representation of a value</li><li><a href="function.settype.html">settype</a> — Set the type of a variable</li><li><a href="function.strval.html">strval</a> — Get string value of a variable</li><li><a href="function.unserialize.html">unserialize</a> — Creates a PHP value from a stored representation</li><li><a href="function.unset.html">unset</a> — Unset a given variable</li><li><a href="function.var-dump.html">var_dump</a> — Dumps information about a variable</li><li><a href="function.var-export.html">var_export</a> — Outputs or returns a parsable string representation of a variable</li></ul> </div> <hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="var.constants.html">Predefined Constants</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.boolval.html">boolval</a></div> <div class="up"><a href="book.var.html">Variable handling</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>
