Singly quoted strings are treated almost literally, whereas doubly quoted strings replace variables with their values as well as specially interpreting certain character sequences.
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1
$variable = "name";2
$stringEx = 'My $variable will not print!\\n';3
print($stringEx);4
$stringEx = "My $variable will print!\\n";5
print($stringEx);Output:
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2
1
My $variable will not print!2
My name will print
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