How does PHP handle initialization of variables compared to other programming languages like Java?

In PHP, variables do not need to be explicitly declared before use, unlike in Java where variables must be declared with a specific data type. PHP automatically initializes variables with a default value of NULL if no value is assigned. This can lead to potential bugs or unexpected behavior if variables are not properly initialized. To avoid this, it is recommended to always initialize variables with a specific value before using them.

// Initializing variables in PHP
$variable = null;
$number = 0;
$string = "";
$array = [];