What are common syntax errors in PHP scripts that result in unexpected behavior, such as the "Parse error: syntax error, unexpected 'else' (T_ELSE)" message?

One common syntax error in PHP scripts that can result in unexpected behavior is forgetting to close a control structure like an if statement or a loop with a closing brace (}). This can lead to a "Parse error: syntax error, unexpected 'else' (T_ELSE)" message because the parser encounters an unexpected keyword like 'else' without a corresponding opening statement. To solve this issue, carefully check the structure of your code and make sure all control structures are properly closed. 

// Incorrect code with missing closing brace
if ($condition) {
    echo "Condition is true";
else {
    echo "Condition is false";
}

// Corrected code with the closing brace added
if ($condition) {
    echo "Condition is true";
} else {
    echo "Condition is false";
}

Keywords

PHP syntax errors unexpected behavior Parse error T_ELSE

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