This is the context when using a comparison operator. The type conversions which occur in this context are explained in the Comparison with Various Types table.
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What is type of juggling in PHP?
In PHP, type juggling refers to the automatic and dynamic conversion of data types during operations or comparisons. While this can be convenient, it can also lead to unexpected behavior if not understood and handled correctly.
What is type juggling in PHP w3schools?
Type Juggling ¶ PHP does not require explicit type definition in variable declaration. In this case, the type of a variable is determined by the value it stores. That is to say, if a string is assigned to variable $var , then $var is of type string.
What kind of typing does PHP use?
PHP is a dynamically typed language, which means that by default there is no need to specify the type of a variable, as this will be determined at runtime. However, it is possible to statically type some aspect of the language via the use of type declarations.
How to get data type in PHP?
PHP has a number of “is_type” functions to check the type of a variable.
1
is_bool($value) returns true if $value is a bool value.
2
is_int($value) returns true if $value is an int value. ...
3
is_float($value) returns true if $value is a float value.
4
is_string($value) returns true if $value is a string.
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This page contains a changelog of availability of the different types and documentation about usage of them in type declarations. ... " (https://wiki.php.net/rfc/ ...
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Change language: English, German ... There are also functions for URL strings, and ... The sections on Types and Type Juggling will make the following clearer.
PHP type comparison tables ¶. The following tables demonstrate behaviors of PHP types and comparison operators, for both loose and strict comparisons.
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Dec 16, 2022 · PHP type juggling vulnerability occurs when a loose comparison operator (== or!=) is used in the place of a strict comparison operator ...
Note: Be aware that PHP's type juggling is not always obvious when comparing values of different types, particularly comparing ints to bools or ints to strings.
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Aug 24, 2022 · Type juggling is an expected functionality of PHP when leveraging loose comparisons. However, it can be used to subvert intended operations.
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Syntax ¶. Ints can be specified in decimal (base 10), hexadecimal (base 16), octal (base 8) or binary (base 2) notation. The negation operator can be used ...
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We take a look at PHP Type Juggling, one somewhat-exotic example of a language-specific idiosyncrasy that can have an impact on your application security.