I just simply want to create a function name with a string value.
Something like this:
$ns = 'test';
function $ns.'_this'(){}
test_this();
It of course throws an error.
I've tried with:
function {$ns}.'_this'
function {$ns.'_this'}
but no luck.
Any thoughts?
You can use create_function to create a function from provided string.
Example (php.net)
<?php
$newfunc = create_function('$a,$b', 'return "ln($a) + ln($b) = " . log($a * $b);');
echo "New anonymous function: $newfunc\n";
echo $newfunc(2, M_E) . "\n";
// outputs
// New anonymous function: lambda_1
// ln(2) + ln(2.718281828459) = 1.6931471805599
?>
create_function() removed in PHP8+This is not possible. If all you want to do is, to prefix all functions with some common string, maybe you want to use namespaces?
namespace foo {
function bar() {}
function rab() {}
function abr() {}
}
// access from global namespace is as follows:
namespace {
foo\bar(); foo\rab(); foo\abr();
}
file with function (somefile.php)
function outputFunctionCode($function_name)
{?>
function <?php echo $function_name ?>()
{
//your code
}
<?php }
file with code which "declares" the function:
ob_start();
include("somefile.php");
outputFunctionCode("myDynamicFunction");
$contents = ob_get_contents();
ob_end_clean();
$file = fopen("somefile2.php", "w");
fwrite($file,$contents);
fclose($file);
include("somefile2.php");
It is ugly, but then again, it is an extremely bad idea to declare functions with dynamic names.
using "eval" is not a good practice, but that may serve the purpose similar to your requirements sometimes.
<?php
$ns = 'test';
$funcName = $ns.'_this';
eval("function $funcName(){ echo 1;}");
test_this();
?>
Is this what you are looking for?
<?php
function foo($a) { print 'foo called'.$a; }
$myfunctionNameStr = 'foo';
$myfunctionNameStr(2);
?>
Cause i don't think that you can dynamically construct a function declaration. You can decide at 'runtime' the value of the $myfunctionNameStr though.
