In php, the function of operator% is

The % operator in PHP is called the modulo operator and is used to calculate the remainder of the division of two numbers. The syntax is $result = $dividend % $divisor, where $dividend is the dividend and $divisor is the divisor. Application scenarios include calculating remainders, judging divisibility, generating random numbers and fuzzy matching strings.

The role of the % operator in PHP

In PHP, the % operator is a modulo operator, used Used to calculate the remainder after dividing two numbers.

Syntax:

<code class="php">$result = $dividend % $divisor;</code>

Where:

• $dividend is the number to be divided.
• $divisor is the divisor.

Example:

<code class="php">$result = 10 % 3; // 输出：1
$result = 11 % 4; // 输出：3
$result = 0 % 5; // 输出：0</code>

Special case:

• When the divisor is 0, a Division by zero error.
• When the dividend or divisor is a floating point number, the result will be a floating point number.

Application:

% operator is used in various scenarios, including:

• Compute two numbers The remainder of division.
• Determine whether a number is divisible by another number.
• Generate random numbers (by taking the remainder of a large prime number).
• Fuzzy match string (by comparing the modulo hash value).

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