-2
What will be printed on the screen by this script ?
<?php
$foo = 'bar';
$bar = 'foo';
print ${$foo};
?>
2 answers
2
In PHP a key following dollar can be the definition of a variable with strange names or its reading. What happens in the example is the value of $foo and play at reading then turns ${bar} containing the value foo.
Related:
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I save my life, thank you :D
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@Carolinewitts, if you want you can create a variable like this
${0} = 'wow'; echo ${0};
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Logically, the printed value is bar, but because this value was assigned to the variable $foo.
Edit: Yes, testing in Fiddle, it is printed foo, but I did not understand why...
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No no no, it will print
foo. -
Oh guys, I’m lost now
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It is php so the result is not bar. hahaha :D
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@There are Fiddle’s for several languages, including PHP
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