Returns true if value is null, false otherwise. Examples ¶. Example #1 ...
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What is is_null in PHP?
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Is NULL vs === NULL in PHP?
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The is_null() function checks whether a variable is NULL or not. This function returns true (1) if the variable is NULL, otherwise it returns ...
2014/01/22 · To my understanding, is_null() returns TRUE if the variable is not set or is NULL. So, does it make sense to negate is_null() in that example if ...
2021/10/05 · The is_null() function is an inbuilt function in PHP which is used to find whether a variable is NULL or not. Syntax: boolean ...
2022/08/19 · The is_null () function is used to test whether a variable is NULL or not. Version: (PHP 4 and above). Syntax:
2023/08/01 · In PHP, null is a special value that represents the absence of a value or the lack of a specific data type. It is a built-in constant in PHP ...
2021/06/11 · The is_null() function returns true if the value of a variable has been explicitly set to NULL . Otherwise, it simply returns false . On the ...
Use is_null() or '===' if there is possible of getting empty array. ... NULL is supposed to indicate the absence of a value, rather than being thought of as a ...
2023/08/24 · I use isset() all the time. The only gotcha is that if the variable exists and is set to null then it will return false .