Using uksort() to Sort an Associative Array by the Length of Its Keys : Array sort « Data Structure « PHP

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PHP » Data Structure » Array sort

Using uksort() to Sort an Associative Array by the Length of Its Keys




<?php

$exes = array( x => 1,

               xxx => 3,

               xx => 2,

               xxxxx => 4,

               xxxxxx => 5

);

function priceCmp( $a, $b ){

    if ( strlen( $a ) == strlen( $b ) )

        return 0;

    if ( strlen( $a ) < strlen( $b ) )

        return -1;

    return 1;

}

uksort( $exes, priceCmp );

foreach ( $exes as $key => $val )

    print "$key: $val<BR>\n";

?>

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2.	Sort associate array
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4.	asort () function retains the array's keys in the original state
5.	To reverse sort an enumerated array, use the rsort () function
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15.	Functions for Sorting Arrays
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17.	Sorting an Array by Its Keys
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20.	Use ksort() to sort by city name.
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25.	krsort() function: the key values are sorted in reverse order.
26.	ksort( ) function sorts array by its keys while preserving the values
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