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substr function is also used to alter an existing string.

substr function is also used to alter an existing string. Correct Answer True

substr function works in a versatile way. It can also be used for altering an existing string i.e. we can edit an existing string. For example, $x= “abcdijklm” substr($x,4,0)= “efgh” ; // stuff $x with efgh without replacing any charcaters print “$x” ; //$x is now abcdefghijklm

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