What are common syntax errors that can occur when passing variables through a link in PHP?

Common syntax errors when passing variables through a link in PHP include missing quotation marks around the variable name or value, using incorrect variable names, or not properly concatenating variables with the rest of the URL string. To solve this issue, make sure to enclose the variables in quotation marks, use the correct variable names, and concatenate variables using the dot (.) operator. 

// Incorrect way of passing variables through a link
echo "<a href='page.php?var=$variable'>Link</a>";

// Correct way of passing variables through a link
echo "<a href='page.php?var=" . $variable . "'>Link</a>";

Keywords

PHP syntax errors passing variables link URL parameters

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