What potential issues can arise from using the assignment operator "=" instead of the comparison operator "==" in PHP conditional statements?

Using the assignment operator "=" instead of the comparison operator "==" in PHP conditional statements can lead to unintended consequences. This is because "=" is used to assign a value to a variable, while "==" is used to compare values. If you mistakenly use "=", you may unintentionally overwrite a variable's value instead of comparing it. To avoid this issue, always double-check your conditional statements to ensure you are using the correct operator. 

// Incorrect usage of assignment operator
$number = 5;

if($number = 10) {
    echo "This will always be executed because the assignment operator was used instead of the comparison operator.";
}

// Correct usage of comparison operator
$number = 5;

if($number == 10) {
    echo "This will not be executed because the comparison is false.";
}

Keywords

PHP assignment operator comparison operator conditional statements errors

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