PHP CLI vs web server execution - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print "Hello from CLI" only when running PHP from the command line.

PHP

<?php
if (php_sapi_name() === [1]) {
    echo "Hello from CLI\n";
}
?>

Drag options to blanks, or click blank then click option'

A"cli"

B"cgi"

C"apache"

D"fpm"

Attempts:

3 left

💡 Hint

Common Mistakes

Using "apache" or "cgi" instead of "cli" causes the condition to fail.

The function php_sapi_name() returns the interface type. "cli" means running from command line.

2fill in blank

medium

Complete the code to get the current script name differently for CLI and web server.

PHP

<?php
if (php_sapi_name() === "cli") {
    $script = [1];
} else {
    $script = $_SERVER['SCRIPT_NAME'];
}
echo $script . "\n";
?>

Drag options to blanks, or click blank then click option'

A$_SERVER['SCRIPT_FILENAME']

B$_SERVER['PHP_SELF']

C$argv[0]

D$argv[1]

Attempts:

3 left

💡 Hint

Common Mistakes

Using $_SERVER variables in CLI mode returns empty or undefined.

In CLI mode, $argv[0] holds the script filename.

3fill in blank

hard

Fix the error in the code to detect if PHP runs via web server or CLI.

PHP

<?php
if (PHP_SAPI == [1]) {
    echo "Running in CLI mode\n";
} else {
    echo "Running in web server mode\n";
}
?>

Drag options to blanks, or click blank then click option'

A"cli"

Bcli

C"CLI"

D'cli'

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting quotes causes a syntax error or undefined constant error.

PHP_SAPI is a string constant, so it must be compared to a string literal "cli" with double quotes.

4fill in blank

hard

Fill both blanks to create an array with script name and execution mode.

PHP

<?php
$info = [
    'script' => [1],
    'mode' => php_sapi_name() [2] "cli" ? 'CLI' : 'Web'
];
print_r($info);
?>

Drag options to blanks, or click blank then click option'

A$argv[0]

B===

C==

D$_SERVER['SCRIPT_NAME']

Attempts:

3 left

💡 Hint

Common Mistakes

Using == instead of === can cause unexpected results.

Use $argv[0] for script name in CLI and strict equality === for comparison.

5fill in blank

hard

Fill all three blanks to create a message showing execution mode and script name.

PHP

<?php
$mode = php_sapi_name() [1] "cli" ? 'CLI' : 'Web';
$name = [2];
$message = "Running in [3] mode: $name\n";
echo $message;
?>

Drag options to blanks, or click blank then click option'

A==

B$argv[0]

C$_SERVER['SCRIPT_NAME']

Dcli

E"CLI"

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong comparison operator or wrong variable for script name.

Use == to compare, $argv[0] for script name in CLI, and the string 'CLI' in the message.