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What is the usage of $GLOBALS in php
- 王林Original
- 2021-06-09 17:30:423138browse
The usage of $GLOBALS in php is to reference all variables available in the global scope, such as [$GLOBALS["foo"]]. $GLOBALS is a global combined array containing all variables.
The operating environment of this article: windows10 system, php 7.3, thinkpad t480 computer.
$GLOBALS is used to reference all variables available in the global scope. It is a global combined array containing all variables. The name of the variable is the key of the array.
Example:
<?php
function test() {
$foo = "local variable";
echo '$foo in global scope: ' . $GLOBALS["foo"] . "\n";
echo '$foo in current scope: ' . $foo . "\n";
}
$foo = "Example content";
test();
?>The output of the above routine is similar to:
$foo in global scope: Example content $foo in current scope: local variable
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