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PHP boolval() Function

PHP boolval() Function

The boolval() function in PHP is used to give the Boolean value for a given variable.

Syntax

boolval ( mixed $var )

Parameter

var(required)- This parameter represents the value that is converted to a boolean. It can be a string type, integer type etc.

Return

This function returns the boolean value for the parameter var. The Boolean value is evaluated based on the following conditions:

  • if $var is evaluated to boolean true it will return TRUE.
  • if $var is evaluated to boolean false it will return FALSE.

Example 1

Output

0.0 will return:      false
12  will return:      true
0   will return:      false

Example 2

Output

4.2 will return :      true
""  will return :      false

Example 3

Output

"PHP": true
"10":  true
"11":  true

Example 4

Output

[11, 12]:   true
[]      :   false
stdClass:   true

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