Martian Defense NoteBook
  • Martian Defense Notebook
  • Training and Career
    • Keeping it Real for Beginners
    • Reading and Repos
    • Media
    • Guides
      • Cybersecurity Roadmaps
      • Cybersecurity Training Topics
      • AppSec Training Pathway
      • Interview Checklist
    • Platforms
      • General
      • Offensive Security
      • Defensive Security
      • CTF Sites
      • Live Vulnerable Sites
    • Entrepreneurship Roadmaps
      • Consulting
      • Starting a Business
  • Technical Resources
    • Offensive-Cybersecurity
      • Application Security
      • General
      • Recon + OSINT
      • Infrastructure Pentesting
      • Cloud Pentesting
      • Wordlists
      • Social Engineering
      • Mobile Pentesting
      • Container Security
      • Blockchain
    • Defensive-Cybersecurity
    • General Cybersecurity
      • Cybersecurity Operating Systems
    • Coding/Programming
    • Reverse Engineering
    • AI and ML
  • Notes
    • Product Security Engineering
      • DevSecOps
        • Docker
          • How to Dockerize Applications with Docker Compose (Using SQLite and Flask)
      • SAST/SCA
        • How to setup a GitHub Action for Code Security analysis
        • JavaScript Security Analysis
        • Java Security 101
        • Tools
        • CodeQL for Beginners
      • Product Security Hardening
      • Threat Modeling
      • PHP Security
    • AppSec Testing
      • Checklists
        • WEB APP PENTESTING CHECKLIST
        • API Testing Checklist
        • Android Pentesting Checklist
        • IoS Pentesting Checklist
        • Thick Client Pentesting Checklist
        • Secure Code Review Checklist
      • Targeted Test Cases
        • Part 1
        • Part 2
      • Common Web Attack and Prevention List
      • Ports and associated Vectors
      • DNS
      • Web Tools
      • Command Injection Testing
      • JWTs and JSON
    • Security Research
      • Publishing CVEs
      • Threat Intelligence
      • Shodan Dork Cheatsheet
      • Github Dorks
      • Bug Bounty
        • Bug Bounty Programs
      • Forums
    • Coding/Programming
      • Secure Coding Practices Checklist
      • JavaScript
      • Python
        • Quick Notes
        • Python Basics for Pentesters
        • Python Snippets
        • XML Basics with Python
      • Golang
        • Theory
        • Security
        • Modules
        • Entry Points
        • File Forensics
        • Cryptography and Encoding
        • Golang Snippets
      • PHP
        • Setup
        • Syntax
        • Variables and Data Types
        • Control Structures
        • Arrays
        • Functions
        • OOP Concepts
        • Database Integration
        • Handling HTTP Methods
        • Session Management
        • File Uploads
        • Email Function
        • Error Handling
        • Advanced Topics and Best Practices
    • Network Security
      • Domain Trust Enumeration
      • Bleeding Edge Vulnerabilities
      • Post-Exploitation
      • Access Control Lists and Entries (ACL & ACE)
      • Credentialed Enumeration
      • Password Attacks
        • Internal Password Spraying
        • Remote Password Attacks
        • Linux Local Password Attacks
        • Windows Local Password Attacks
        • Windows Lateral Movement
      • PowerView
      • Pivoting, Tunneling and Forwarding
        • Advanced Tunneling Methods
        • Dynamic Port Forwarding (SSH + Socks)
        • Port Forwarding Tools
        • SoCat
      • Linux Privilege Escalation
      • Windows Privesc
        • OS Attacks
        • Windows User Privileges
        • Windows Group Privileges
        • Manual Enumeration
        • Credential Theft
      • Kerberos Attacks
        • Kerberos Quick Reference Sheet
    • Cloud Security Testing
    • Defensive Security
      • Splunk
        • Basic Queries
        • Dashboards
      • Forensics
        • Volatility
      • WireShark filters
    • Governance, Risk, Compliance
      • Vulnerability Management Lifecycle
    • Capture-the-Flag Training
      • Vulnerable Machine Checklist
      • Reverse Engineering Checklist
      • Mobile Checklist
      • Forensics Checklist
      • Binary Exploitation
      • Cryptography Checklist
    • Reporting
    • PowerShell
    • Linux Basics
    • Basic IT Tasks
  • Digital Privacy and Hygiene
    • Personal Information Removal Services
    • De-Googling Android
    • DNS Services
    • Privacy References
    • Opsec
  • RedPlanet Labs
    • PyGOAT
    • OWASP Juice Shop
Powered by GitBook
On this page
  • PHP Tags
  • Comments
  • Echo and Print Statements
  • Semicolons
  • Variables
  1. Notes
  2. Coding/Programming
  3. PHP

Syntax

PHP is a server-side scripting language, which means that PHP scripts are executed on the server and the result is sent to the client as plain HTML.

PHP Tags

PHP scripts are always enclosed within the PHP opening and closing tags. The default syntax for these tags is as follows:

<?php
// Your PHP code goes here
?>

Everything outside these tags is considered plain HTML (or other types of code, like JavaScript or CSS), and everything inside these tags is treated as PHP code.

Comments

Comments are a useful way to leave notes for yourself and others in the code. PHP supports single-line and multi-line comments:

<?php
// This is a single-line comment

/*
This is a multi-line comment
It spans multiple lines
*/
?>

Echo and Print Statements

The echo and print statements are used in PHP to output data to the screen. Both can be used interchangeably in most cases, but echo is slightly faster:

<?php
echo "Hello, Humans!";
print "Hello, Humans!";
?>

Semicolons

In PHP, semicolons (;) are used to denote the end of a statement, similar to languages like C, Java, and JavaScript:

<?php
echo "Hello, Humans!"; // Note the semicolon at the end
?>

Variables

Variables in PHP start with a $ sign, followed by the name of the variable:

<?php
$name = "JMartian";
echo $name; // Outputs: Martian
?>

Case Sensitivity

In PHP, all keywords (like if, else, while, echo, etc.), classes, functions, and user-defined functions are NOT case-sensitive. However, all variable names are case-sensitive.

PreviousSetupNextVariables and Data Types

Last updated 5 months ago