PHP Interview Question: Difference between echo and print in PHP

In PHP, both echo and print are language constructs used to output strings. The main difference between them lies in their syntax and return values:

1. Echo:

• Syntax: echo "Hello, world!";
• Usage: Echo does not return a value and is faster when outputting multiple values.

2. Print:

• Syntax: print "Hello, world!";
• Usage: Print returns a value of 1, making it suitable for using within expressions or assigning values.

When choosing between echo and print, it ultimately depends on the specific usage:

• Use echo when: Speed and simplicity are key, especially when outputting multiple strings.
• Use print when: You need to evaluate the function as an expression, or when a return value is required.