Is the Leading Colon in PDOStatement::bindParam() Parameter Names Optional?

Can the Leading Colon for Parameter Names in PDOStatement::bindParam() Be Omitted?

The PDOStatement::bindParam() method allows for passing named parameters of the form :name. However, some ambiguity arises regarding the mandatory nature of the leading colon.

(Y/N) Can the colon be omitted when passing named parameters to PDOStatement::bindParam() without affecting its functionality?

According to the documentation, the parameter identifier should be in the format :name for named placeholders. However, some users have observed that omitting the colon does not seem to affect the execution of the statement.

Answer:

No, the colon is not optional.

While omitting the colon might currently work in certain versions of PHP, it is not officially supported behavior and should not be relied upon. The PHP source code reveals that a colon is internally added to the parameter if it is missing. Hence, relying on this behavior may lead to unexpected results in future versions of PHP.

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