Language feature of PHP: A variable variable takes the value of a variable and treats that as the name of a variable.
Language feature of PHP: A variable variable takes the value of a variable and treats that as the name of a variable.
Questions tagged [variable-variables]
171 questions
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How do you set a static variable variable in object?
I have an object Obj with a method sql() that creates SQL queries to update a database. The tables in the database have unique names for their ID fields. My objective is to be able to define the table name and ID field name in the child…
tj12
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2 answers
How do I split and reconstruct a variable name while holding its original value
Is it possible to split variables that have already been assigned values, and re-piece them back together to hold those same previous values?
For Example:
URLs.QA.Signin = 'https://qa.test.com'
TestEnvironment = 'QA'
CurrentURL = 'URLs.' +…
bitShredder
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1 answer
"Variable variable" syntax
This is a question related to getting Drupal CCK fields (just in case that happens to change anything).
I have several Drupal CCK fields with similar names. They have the same name with a number at the end. that I'd like to pull values from these…
Kerri
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1 answer
Calling Class property using variables in Zend
I am creating partials where an items property names are passed from an array to access the values of those properties but I receive an error saying Undefined property of Namespace\Entity::$variable when defining $property->{$variable}. How would I…
Chaosjosh
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2 answers
Javascript dynamically create variables from array
just started to dabble with Javascript so I'm sorry if this is a basic question. I have an array of keys:
keys = ['fruits','vegetables','fats','meats']
I want to dynamically create a Map for each of these elements in the array (the length of this…
tokatokeari
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- 5
0
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1 answer
Is there any case in which PHP's variable variables make a solution clearer?
Possible Duplicate:
what's an actual use of variable variables?
Is there any case in which PHP's variable variables make a solution clearer?
E.g. this:
$a = 'hello';
$$a = 'hello, world!';
echo $hello;
Joe D
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1 answer
Howto make a var. name with a var. in C/C++?
I have some vars live:
int foo1;
int foo2;
..
and I want to reach them from:
for (int i = 1;i<=2;i++)
{
// howto get foo1 and foo2?
}
how to get them?
EDIT, end what when it will be no int but a Opject *pointer;?
gurehbgui
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1 answer
Dynamic class creation in php
I'm trying to do a bit of php magic in one line with instantiating a class, but it seems the parser wont allow me. Example:
class Test{
private $foo;
public function __construct($value){
$this->foo = $value;
}
public…
Dennis
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3 answers
php: How to get element in array by index using variable-variables
If I have:
params()->fromPost();
$abc='params[0][0]';//$abc dynamiccly
I cannot access $params[0]
How to get string element?
I try to use
echo $$abc;
But
Notice: Undefined…
Hào Nghiêm Xuân
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1 answer
PHP - returning a variable variable from a function scope
Is there a way to return a variable variable from a function?
This is what I tried:
function varvar($num){
$var = "foo".$num;
return $$var;
}
varvar(3);
echo $foo3;
But nothing prints out. Any ideas?
adamdesign
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0
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1 answer
PHP and variable variables ($$) syntax
Before upgrading to PHP 7, I had this code and it returned true
var_dump(isset($$_SESSION['payment']) );
var_dump(is_object($$_SESSION['payment']));
var_dump($_SESSION['payment']); // string 'moneyorder'
After upgrading to PHP 7, I rewrote the…
kurama
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1 answer
Using a variable variable in an object property in PHP
I've set a few variables:
$field = "XYZ";
$block_hi = $field."_hi";
$block_lo = $field."_lo";
Then I have an object with properties that have the name of my above variables:
$obj->XYZ_hi['val'] = "value1";
$obj->XYZ_lo['val'] = "value2";
I thought…
CMarcera
- 69
- 7
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1 answer
php variable variables to access property of an object
I want to store an property->object name in a table and access in code.
What is the proper way to accomplish the following.
$patient = new stdClass();
$patient->patient_number = '12345';
$cls = 'patient';
$prp = 'patient_number';
echo 'test1 = '…
Ken Roberts
- 15
- 4
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4 answers
PHP variable not working when referenced with '$'
I'm trying to convert a PHP variable to a JS variable using a little helper function that uses variable variables. To simplify, here is what I'm trying to accomplish:
$project_key = 'project 1';
function to_js($variable) {
echo $$variable;
…
northamerican
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1 answer
Potential security issues with variable variables
I often use the following lines to simplify handling form input.
foreach($_POST as $key => $value){
$$key = $value;
}
This is really handy because you only need there lines and you've got all of the things you submitted as variables, but every…
pocketg99
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