What is the significance of the error message "Fehler : T_VARIABLE" in PHP?

The error message "Fehler : T_VARIABLE" in PHP indicates that there is a syntax error related to a variable in the code. This error often occurs when a variable is not properly declared or used incorrectly in the code. To solve this issue, check the variable names, ensure they are correctly spelled and properly declared before use. 

// Incorrect variable declaration
$var1 = "Hello";
$var2 = $var1 + 5; // This line will cause a "Fehler : T_VARIABLE" error

// Correct variable declaration
$var1 = "Hello";
$var2 = $var1 . "5"; // Concatenating the variable correctly

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error message T_VARIABLE PHP significance programming

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