last two lines of code in one statement in php
In Order to optimize my code , how can i write the last two lines of code in one statement

`$v1 = functionName;`  
`$strR = "get".$v1;`  
`echo $obj->$strR();`  

as i wana get `$obj->getfunctionName();`

please help
last two lines of code in one statement in php
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In Order to optimize my code , how can i write the last two lines of code in one statement

`$v1 = functionName;`  
`$strR = "get".$v1;`  
`echo $obj->$strR();`  

as i wana get `$obj->getfunctionName();`

please help