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Type checking changing

Type checking and type changing is in here.

base_convert Convert a number between arbitrary bases
ctype_alnum Check for alphanumeric character(s)
ctype_alpha Check for alphabetic character(s)
ctype_cntrl Checks if all of the characters in the provided string, text, are control characters. Control characters are e.g. line feed, tab, escape.
ctype_digit Check for numeric character(s)
ctype_graph Checks if all of the characters in the provided string, text, creates visible output.
ctype_lower Checks if all of the characters in the provided string, text, are lowercase letters.
ctype_print Checks if all of the characters in the provided string, text, are printable.
ctype_punct Check for any printable character which is not whitespace or an alphanumeric character
ctype_space Check for whitespace character(s)
ctype_upper Checks if all of the characters in the provided string, text, are uppercase characters.
ctype_xdigit Checks if all of the characters in the provided string, text, are hexadecimal 'digits'.
define Defines a named constant
defined Checks whether a given named constant exists
filter_has_var Checks if variable of specified type exists
hebrevc Convert logical Hebrew text to visual text with newline conversion
iconv Convert string to requested character encoding
iconv_get_encoding Retrieve internal configuration variables of iconv extension.
is_a Checks if the object is of this class or has this class as one of its parents
is_bool Finds out whether a variable is a boolean
is_double Alias of is_float()
is_float Finds whether the type of a variable is float
is_int Find whether the type of a variable is integer
is_integer Alias of is_int()
is_long Alias of is_int()
is_null Finds whether a variable is NULL
is_numeric Finds whether a variable is a number or a numeric string
is_object Finds whether a variable is an object
settype Set the type of variable var to type.
trait_exists trait_exists — Checks if the trait exists




 
 
 
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