How to use echo in php

PHP echo is a function used to output data. Its syntax is echo (string | variable). It will append the value of the specified string or variable to the end of the output buffer. echo can be used to directly output strings, variable values, multiple values, and HTML markup. The data it outputs will be automatically converted to a string, and the output will be immediately sent to the output buffer.

Usage of echo in PHP

echo is a built-in function in PHP for outputting data. It appends the specified string or variable value to the end of the output buffer.

Syntax:

echo (string | variable);

Parameters:

• string | variable: To output string or variable.

Usage:

1. Output the string directly:

   echo "Hello World!";

2. Output the value of the variable:

   $name = "John Doe";
   echo $name;

3. Output multiple values ​​at the same time:
   Multiple values ​​can be separated by commas , output in sequence.

   echo "Name: ", $name, ", Age: ", $age;

4. Use HTML tags:
   HTML tags can be output in echo.

   echo "<p>This is a paragraph.</p>";

Note:

• The data output by echo will be automatically converted into a string.
• echo does not support printing objects. To print an object, you can use the var_dump() or print_r() function.
• The output of echo will be sent to the output buffer immediately. If you want to manipulate the output before sending it to the browser, you can use the ob_start() and ob_get_clean() functions.

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