What is the difference between var_dump() and print_r() ?

Here is the difference between var_dump() and print_r() in PHP:

Syntax

• var_dump() displays structured information about one or more expressions, including its type and value.
• print_r() displays information about a variable in a more human-readable format. It is mainly used for debugging.

Output Format

• var_dump() outputs the data type, length (for strings), and value of a variable. It also displays the structure of arrays and objects.
• print_r() outputs a more human-readable representation of a variable. For arrays and objects, it shows the structure in a tree-like format.

Return Value

• var_dump() returns NULL and outputs the information to the output buffer.
• print_r() returns TRUE if the argument is an arra...