Linear Search | PHP code for linearly search x in arr [ ] . If x is present then return its location , otherwise return - 1 ; Driver Code ; Function call
< ? php function search ( $ arr , $ x ) { $ n = sizeof ( $ arr ) ; for ( $ i = 0 ; $ i < $ n ; $ i ++ ) { if ( $ arr [ $ i ] == $ x ) return $ i ; } return -1 ; } $ arr = array ( 2 , 3 , 4 , 10 , 40 ) ; $ x = 10 ; $ result = search ( $ arr , $ x ) ; if ( $ result == -1 ) echo " Element ▁ is ▁ not ▁ present ▁ in ▁ array " ; else echo " Element ▁ is ▁ present ▁ at ▁ index ▁ " , $ result ; ? >