If the $name constant doesn't exist in the targetted class the function returns bool(false), not empty nor null but false (you to test with "==="
$constFounded = false ;
$this->currentlangClass = new ReflectionClass($langFile);
$this->currentlangClass->getConstant($constant);
if($myConst !== false){
$constFounded = true ;
}
ReflectionClass::getConstant
(PHP 5, PHP 7)
ReflectionClass::getConstant — Gets defined constant
Descrierea
Gets the defined constant.
Avertizare
Această funcție nu este documentată în prezent; este disponibilă numai lista sa de argumente.
Parametri
-
name -
The name of the class constant to get.
Valorile întoarse
Value of the constant with the name name.
Returns false if the constant was not found in the class.
Exemple
Example #1 Usage of ReflectionClass::getConstant()
<?php
class Example {
const C1 = false;
const C2 = 'I am a constant';
}
$reflection = new ReflectionClass('Example');
var_dump($reflection->getConstant('C1'));
var_dump($reflection->getConstant('C2'));
var_dump($reflection->getConstant('C3'));
?>
Exemplul de mai sus va afișa:
bool(false) string(15) "I am a constant" bool(false)
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User Contributed Notes 2 notes
aurelien dot tisserand at wavesoftware dot ch ¶
10 years ago
Bhimsen ¶
12 years ago
The "getconstant" method can be used to get the value associated with a constant
of a particular class that you are examining.
The following code snippet shows this:
<?php
class Test{
const ONE = "Number one";
const TWO = "Number two";
}
$obj = new ReflectionClass( "Test" );
echo $obj->getconstant( "ONE" )."\n";
echo $obj->getconstant( "TWO" )."\n";
?>
output:
Number one
Number two
