What best practices should be followed when concatenating strings and using quotation marks in PHP code?

When concatenating strings and using quotation marks in PHP code, it's important to pay attention to the placement of single and double quotes to avoid syntax errors. One common practice is to use single quotes for string literals and double quotes for variables to ensure proper concatenation. Additionally, escaping quotes within strings using the backslash (\) can help prevent errors. 

// Example of concatenating strings with proper quotation marks
$string1 = 'Hello';
$string2 = "world";
$concatenatedString = $string1 . ' ' . $string2;
echo $concatenatedString;

Keywords

string concatenation quotation marks PHP code syntax error escape characters

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