How can the placement of variables within conditional statements impact their accessibility and functionality in PHP scripts?

Placing variables within conditional statements can impact their accessibility and functionality in PHP scripts because variables declared within a conditional block are only accessible within that block. To ensure variables are accessible throughout the script, they should be declared outside of any conditional statements. 

// Declare the variable outside of the conditional block
$var = 'Hello';

if ($condition) {
    // Use the variable here
    echo $var;
}

// Variable is still accessible here
echo $var;

Keywords

variables conditional statements accessibility functionality PHP scripts

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