BASIC TUTORIAL FOR PAGES HOW TO
BASIC TUTORIAL FOR PAGES UPDATE
BASIC TUTORIAL FOR PAGES CODE

BASIC TUTORIAL FOR PAGES HOW TO

The following example demonstrates how to use echo Command output variables and strings пјљ ' Д®cho 'Study PHP at $txt2' //php Double quotes can contain variablesД®cho 'My car is a ' // Use braces Explicitly specify that this is a variable PHP is fun!' Д®cho 'This', ' string', ' was', ' made', ' with multiple parameters.' Tips пјљecho The output is faster than print Come on, echo No return value ,print There is a return value 1.Д®cho and print It's all a language structure, You can use it without parentheses, You can also add parentheses пјљ echo Or echo() print print().

print - Only one string is allowed to be output, The return value is always 1.

echo - You can output one or more strings.Parameters are declared in the parameter list, As part of the function declaration пјљ however, Sometimes you want a local variable not to be deleted, You can use static keyword ДЄ parameter is a local variable that passes a value to a function through the calling code.

When a function completes, All its variables are usually deleted.

BASIC TUTORIAL FOR PAGES UPDATE

This array can be accessed inside the function, It can also be used directly to update global variables. PHP Store all global variables in a file named $GLOBALS In the array of. Before the variables in the function global keyword пјљ Stay PHP The variables declared inside the function are local variables, Can only be accessed inside a function пјљ The test variable is inside the function :' Д®cho ' The test variable is outside the function :' Д¬all a global variable defined outside the function inside the function, We need to add. In addition to functions, Global variables can be accessed by any part of the script, To access a global variable in a function, Need to use global keyword. Variables defined outside all functions, Have global scope. PHP There are four different variable scopes пјљ Before using variables пј€ definition пј‰ The type and name of the variable. In strongly typed programming languages, We must declare. PHP According to the value of the variable, Automatically convert variables to the correct data type. The variable is created the first time you assign it пјљ PHP There are no commands that declare variables. Variables are expressed in $ The symbol begins, Followed by the name of the variable Two basic instructions for outputting text in the browser пјљecho and print.

BASIC TUTORIAL FOR PAGES CODE

PHP Each line of code in the must end with a semicolon

PHP Scripts can be placed anywhere in the document. Integrated development environment recommendation WAMPпјљ PHP Basic grammar Official PHP website пј€PHP.netпј‰ have PHP Installation instructions for пјљ If your server does not support PHP, You must пјљ PHP You can restrict users from accessing some pages on your website.PHP You can add гЂЃ Delete гЂЃ Modify the data in your database.PHP You can create гЂЃ open гЂЃ read гЂЃ write in гЂЃ Close the file on the server.PHP The default file extension for a file is '.php'.PHP The code executes on the server, The result is pure HTML Return the form to the browser.PHP The file can contain text гЂЃHTMLгЂЃJavaScript Code and PHP code.PHP On behalf of PHP: Hypertext Preprocessor.

Basic tutorial for pages