---
title: Basic Syntax
localeTitle: Sintaxis basica
---
# Sintaxis basica

Un script PHP se puede colocar en cualquier parte del documento.

Un script PHP comienza con `<?php` y termina con `?>`

A continuación, tenemos un ejemplo de un archivo PHP simple, con un script PHP que utiliza una función de PHP "echo" para generar el texto "Hello World!" en una página web

\`\` \`\`

# Mi primera página PHP
```
The output of that would be : 
```

Mi primera página PHP

Hola Mundo!
```
#### Note: PHP statements end with a semicolon (;). 
 
 # Comments in PHP 
 
 PHP supports several ways of commenting: 
```

```
# PHP Case Sensitivity 
 
 In PHP, all keywords (eg if, else, while, echo, etc.), classes, functions, and user-defined functions are NOT case-sensitive. 
 
 In the example below, all three echo statements below are legal (and equal): 
```

```
### However; all variable names are case-sensitive. 
 
 In the example below, only the first statement will display the value of the $color variable (this is because $color, $COLOR, and $coLOR are treated as three different variables): 
```

\`\` \`\`