How to express it in php

The AND operator (&&) in PHP is used to connect two Boolean expressions and return a Boolean value: when both expressions are TRUE, the result is TRUE; otherwise, the result is FALSE. This operator The operator with a higher priority than OR has short-circuit evaluation characteristics. When the first expression is FALSE, the second expression will not be evaluated

AND operator in PHP

The AND operator (&&) in PHP is used to connect two Boolean expressions and return a Boolean value, indicating that both expressions are true. TRUE, otherwise FALSE.

Grammar:

<code class="php">$result = $expression1 && $expression2;</code>

Where:

• $expression1 and $expression2 are The Boolean expression to be concatenated.
• $result is a Boolean value that is TRUE when both expressions are true, otherwise it is FALSE.

Example:

<code class="php">$age = 18;
$gender = 'male';

if ($age >= 18 && $gender == 'male') {
    echo "符合条件";
} else {
    echo "不符合条件";
}</code>

In this example, only if $age is greater than or equal to 18 and $gender The condition will only be true when it is equal to "male". Otherwise, the condition does not hold.

Note:

• The AND operator in PHP has a higher priority than the OR operator.
• The AND operator has short-circuit evaluation properties. This means that if the first expression is FALSE, the second expression will not be evaluated.
• AND operator can connect multiple Boolean expressions, for example:

<code class="php">if ($expression1 && $expression2 && $expression3) {
    // ...
}</code>

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