Junior PHP Developer Question:
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Explain what is the static variable in function useful for?
Answer:
A static variable is defined within a function only the first time and its value can be modified during function calls as follows:
<!--?php
function testFunction()
{
static $testVariable = 1;
echo $testVariable;
$testVariable++;
}
testFunction(); //1
testFunction(); //2
testFunction(); //3
?-->
<!--?php
function testFunction()
{
static $testVariable = 1;
echo $testVariable;
$testVariable++;
}
testFunction(); //1
testFunction(); //2
testFunction(); //3
?-->
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