PHP Output Statements

Output statement

echo????

Example:

Print ();

Example:

Only scalar data types can be output, Boolean false cannot be output

Print_r ();

???? Print_r can display data in a more easily understandable way

Example:

Var_dump ();

???? Used for detailed information display data, mainly for programmers to debug programs, not to display information for users.

Example:

printf ();

Formatted output

Grammar:

???? printf (' format string ', data list);

Description

???? %d???????? Display the corresponding data in decimal

????%o???????? Display the corresponding data in octal

???? %b???????? Display the corresponding data in binary

???? %h???????? Display the corresponding data in hexadecimal

Example:

PHP Output Statements