You installed PHP but when running php -v in the terminal, you get an error saying 'command not found'. What is the most likely cause?

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PHP - Basics and Execution Model

You installed PHP but when running php -v in the terminal, you get an error saying 'command not found'. What is the most likely cause?

APHP is not installed or not added to system PATH

BThe PHP script has syntax errors

CThe web server is not running

DThe PHP file has wrong file extension

Step-by-Step Solution

Solution:

Step 1: Understand the error message
'command not found' means the terminal cannot find the PHP program to run.
Step 2: Identify common causes
This usually happens if PHP is not installed or its folder is not added to the system PATH environment variable.
Final Answer:
PHP is not installed or not added to system PATH -> Option A
Quick Check:
Command not found = PHP missing or PATH missing [OK]

Quick Trick: Check PHP installation and PATH if command not found [OK]

Common Mistakes:

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