05-15-2011
"a" is an associative array with key,value combination. Here key:value will be orange:10, orange:50, green:30 etc.
In the first run, a[orange] will be 10, in the second run, a[orange] will be 20 and so on
$2 prints the values i.e. 50, 30 etc, initially a[$1] will be blank
Algorithm used is
1. start - a[$1]=0
2. If $2(which is the value) > a[$1] then a[$1]=$2(newvalue)
3. Read next line
4. Repeat step 2 and 3 until EOF
5. Print the array a
regards,
Ahamed
This User Gave Thanks to ahamed101 For This Post:
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LEARN ABOUT PHP
array_shift
ARRAY_SHIFT(3) 1 ARRAY_SHIFT(3)
array_shift - Shift an element off the beginning of array
SYNOPSIS
mixed array_shift (array &$array)
DESCRIPTION
array_shift(3) shifts the first value of the $array off and returns it, shortening the $array by one element and moving everything down.
All numerical array keys will be modified to start counting from zero while literal keys won't be touched.
Note
This function will reset(3) the array pointer of the input array after use.
PARAMETERS
o $array
- The input array.
RETURN VALUES
Returns the shifted value, or NULL if $array is empty or is not an array.
EXAMPLES
Example #1
array_shift(3) example
<?php
$stack = array("orange", "banana", "apple", "raspberry");
$fruit = array_shift($stack);
print_r($stack);
?>
The above example will output:
Array
(
[0] => banana
[1] => apple
[2] => raspberry
)
and orange will be assigned to $fruit.
SEE ALSO
array_unshift(3), array_push(3), array_pop(3).
PHP Documentation Group ARRAY_SHIFT(3)