PHP Random Numbers

The rand() function is used in PHP to generate a random integer. The rand() PHP function can also be used to generate a random number within a specific range, such as a number between 10 and 35.

If no max limit is specified when using the rand() PHP function, the largest integer that can be returned is determined by the getrandmax() function, which varies by operating system.  PHP random numbers

Random Number Syntax :

rand();

or

rand(min, max);

Random Numbers :

The rand() funciton generates a random number:


Example 


11
18804
367545283

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PHP Numbers

You must have noticed one thing that whenever we take the numbers in the identification, then its conversion becomes automatic Or we can say that whatever number we give through Varible, the data type of the number is automatically correct according to its data type.Then, if you assign a string to the same variable, the type will change to a string. PHP numbers with integers

This automatic conversion can sometimes break your code.

PHP Casting Strings and Floats to Integers

Sometimes you need to cast a numerical value into another data type.

The (int), (integer), or intval() function are often used to convert a value to an integer.

Example

Cast float and string to integer:

PHP Numbers

You must have noticed one thing that whenever we take the numbers in the identification, then its conversion becomes automatic Or we can say that whatever number we give through Varible, the data type of the number is automatically correct according to its data type.Then, if you assign a string to the same variable, the type will change to a string. PHP numbers with integers

This automatic conversion can sometimes break your code.

PHP NaN

NaN stands for Not a Number.

NaN is used for impossible mathematical operations.

PHP has the following functions to check if a value is not a number:

• is_nan()

However, the PHP var_dump() function returns the data type and value:

Example

PHP Numbers

You must have noticed one thing that whenever we take the numbers in the identification, then its conversion becomes automatic Or we can say that whatever number we give through Varible, the data type of the number is automatically correct according to its data type.Then, if you assign a string to the same variable, the type will change to a string. PHP numbers with integers

This automatic conversion can sometimes break your code.

PHP Numerical Strings

The PHP is_numeric() function can be used to find whether a variable is numeric. The function returns true if the variable is a number or a numeric string, false otherwise.

Example

Check if the variable is numeric:

PHP Numbers

You must have noticed one thing that whenever we take the numbers in the identification, then its conversion becomes automatic Or we can say that whatever number we give through Varible, the data type of the number is automatically correct according to its data type.Then, if you assign a string to the same variable, the type will change to a string. PHP numbers with integers

This automatic conversion can sometimes break your code.

PHP Infinity

PHP Numbers

You must have noticed one thing that whenever we take the numbers in the identification, then its conversion becomes automatic Or we can say that whatever number we give through Varible, the data type of the number is automatically correct according to its data type.Then, if you assign a string to the same variable, the type will change to a string. PHP numbers with integers

This automatic conversion can sometimes break your code.

PHP Floats

A float is a number with a decimal point or a number in exponential form.

2.0, 256.4, 10.358, 7.64E+5, 5.56E-5 are all floats.

The float data type can commonly store a value up to 1.7976931348623E+308 (platform dependent), and have a maximum precision of 14 digits.

PHP has the following functions to check if the type of a variable is float:

• is_float()
• is_double() - alias of is_float()

Example

Check if the type of a variable is float:








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PHP Numbers

You must have noticed one thing that whenever we take the numbers in the identification, then its conversion becomes automatic Or we can say that whatever number we give through Varible, the data type of the number is automatically correct according to its data type.Then, if you assign a string to the same variable, the type will change to a string. PHP numbers with integers

This automatic conversion can sometimes break your code.

PHP Integers

An integer is a number without any decimal part.

2, 256, -256, 10358, -179567 are all integers. While 7.56, 10.0, 150.67 are floats.


So, an integer data type is a non-decimal number between -2147483648 and 2147483647. A value greater (or lower) than this, will be stored as float, because it exceeds the limit of an integer.

Another important thing to know is that even if 4 * 2.5 is 10, the result is stored as float, because one of the operands is a float (2.5).

Here are some rules for integers:

• An integer must have at least one digit
• An integer must not have a decimal point
• An integer can be either positive or negative
• Integers can be specified in three formats: decimal (10-based), hexadecimal (16-based - prefixed with 0x) or octal (8-based - prefixed with 0)

PHP has the following functions to check if the type of a variable is integer:

• is_int()
• is_integer() - alias of is_int()
• is_long() - alias of is_int()

Integer Data Type Check 

Example 




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