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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['name'] = "xiaoliang"; function changeName(){ $GLOBALS['name'] = "daliang"; } changeName(); echo "my name is " . $GLOBALS['name'] . "<br/>"; ?>
Recommended tutorial: "PHP Tutorial"
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