How to use extract and compact functions in PHP

This article mainly introduces how to use extract and compact functions in PHP. It is very detailed and has a certain reference value. Friends who are interested must finish it!

Extract (import variables from an array into the current symbol table), compact (create an array containing variable names and their values)

A = "Original"; $my_array = array ("a" = > "Cat", "b" = > "Dog", "c" = > "Horse"); extract ($my_array); echo "\ $a = $a;\ $b = $b;\ $c = $c"

Output:

$a = Cat; $b = Dog; $c = Horse

$firstname = "Peter"; $lastname = "Griffin"; $age = "41"; $result = compact ("firstname", "lastname", "age"); print_r ($result)

Output:

Array

(

[firstname] = > Peter

[lastname] = > Griffin

[age] = > 41

)

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