What does the & symbol in php syntax mean?

What does the & symbol in php syntax mean?

In PHP syntax, the & symbol is not used very much, but it also needs to be understood and mastered. Specifically, this single & symbol represents reference assignment

Create a new PHP document and define a variable, example:

$fruit = 'cherry';

Use the "&" symbol to create a reference variable, example:

$quote = &$fruit;

Print the values ​​​​of two variables, example:

echo '$quote='.$quote;
echo &#39;<br />&#39;;
echo &#39;$fruit=&#39;.$fruit;

Save the above content, view and print in the browser,

Modify the value of any variable and print again. The values ​​of both variables have changed.

So the reference assignment can be understood as an alias of a variable. For example ($quote is $ Alias ​​of fruit)

Example:

$quote = 'garpe';
echo '$quote='.$quote;
echo &#39;<br />&#39;;
echo &#39;$fruit=&#39;.$fruit;

Save the above content and view the print preview again

Notes

Referenced and referenced variables are also called memory communities.

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