How to set global variables in PHP

How to set global variables in PHP

1. Use the PHP syntax structure "global" to declare global variables. Note that "global" defines global variables. At this time, values ​​cannot be assigned together and must be declared first before assignment;

Sample code:

<?php

global $name;

$name = "xiaoliang";

function changeName(){
    $name = "daliang";
}

changeName();

echo "my name is " . $name . "<br/>";

?>

2. Just put the variable into the super global variable "$GLOBALS".

Sample code:

<?php

$GLOBALS[&#39;name&#39;] = "xiaoliang";

function changeName(){
    $GLOBALS[&#39;name&#39;] = "daliang";
}

changeName();

echo "my name is " . $GLOBALS[&#39;name&#39;] . "<br/>";

?>

Recommended tutorial: "PHP Tutorial"

The above is the detailed content of How to set global variables in PHP. For more information, please follow other related articles on the PHP Chinese website!