What are the symbols used to define variables in php

The dollar sign $ is used to define variables in PHP. The dollar sign is followed by the variable name when declaring, such as $name = "John Doe". Variable names are case-sensitive, start with a letter or underscore, can only contain letters, numbers, and underscores, and cannot use reserved words.

The symbols used to define variables in PHP: $

The dollar sign is used in PHP$ to define variables. The word or phrase immediately following the dollar sign is the name of the variable. For example:

<code class="php">$name = "John Doe";
$age = 30;</code>

In the above example, $name and $age are both variables. Variable names are case-sensitive, so $name and $Name are different variables.

Variable names must start with a letter or underscore, and can only contain letters, numbers, and underscores. Some reserved words (such as true and false) cannot be used as variable names.

Once a variable is defined, it can be used to store data. For example:

<code class="php">$name = "Jane Doe";
echo "Hello, $name!";</code>

The above code will output: "Hello, Jane Doe!".

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