Suppose we want to find information about a student from a student list that contains a student in another section, so in this case RollNo alone may not produce the correct output. Therefore, we will need to find two values key = > in the list, which are equal to rollNO and section.Example :
// PHP search program several
// key = > pairs of values in an array function search ( $array , $search_list ) { // Create array of results $result = array (); // iterate over each element of the array foreach ( $array as $key = > $value ) { // Loop over each search term foreach ( $search_list as $k = > $v ) { // If no array element occurs // search condition then continue // to next element if (! isset ( $value [ $k ]) || $value [ $k ]! = $v ) { // Skip two loops continue 2; } } // Add array element key to // array of results $result [] = $value ; } // Return the result return $result ; }
// Multidimensional array for the list of students $arr = array ( 1 = > array ( ’rollNo’ = > 44, ’name’ = > ’ Alice’ , ’section’ = > ’B’), 2 = > array ( ’rollNo’ = > 3, ’name’ = > ’ Amit’ , ’section’ = > ’ B’), 3 = > array ( ’rollNo’ = > 3, ’name’ = > ’ Bob’ , ’section’ = > ’ A’), 4 = > array ( ’rollNo’ = > 5, ’name’ = > ’ Gaurav’ , ’section’ = > ’ B’), 5 = > array ( ’rollNo’ = > 5, ’name’ = > ’ Gaurav’ , ’section’ = > ’ A’) );
// Define a search list with multiple keys = > value pair $search_items = array ( ’rollNo’ = > 5, ’section’ = > " A " );
// Call the search and pass the array and
// search list $res = search ( $arr , $search_items );
// Print search result foreach ( $res as $var ) { echo ’RollNo:’ . $var [ ’rollNo’ ]. ’
’ ; echo ’Name:’ . $var [ ’name’ ]. ’
’ ; echo ’Section:’ . $var [ ’section’ ]. ’
’ ; }
?> Exit:
RollNo: 5
Name: Gaurav
Section: A
