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156 lines
2.6 KiB
PHP
156 lines
2.6 KiB
PHP
--TEST--
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Test usort() function : usage variations - numeric data
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--FILE--
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<?php
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/* Prototype : bool usort(array $array_arg, Unicode string $cmp_function)
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* Description: Sort an array by values using a user-defined comparison function
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* Source code: ext/standard/array.c
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*/
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/*
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* Pass arrays of numeric data to usort() to test how it is re-ordered
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*/
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echo "*** Testing usort() : usage variation ***\n";
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function cmp_function($value1, $value2)
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{
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if($value1 == $value2) {
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return 0;
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}
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else if($value1 > $value2) {
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return 1;
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}
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else {
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return -1;
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}
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}
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// Int array
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$int_values = array(0 => 3, 1 => 2, 3 => 100,
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4 => 150, 5 => 25, 6 => 350,
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7 => 0, 8 => -3, 9 => -1200);
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echo "\n-- Sorting Integer array --\n";
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var_dump( usort($int_values, 'cmp_function') );
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var_dump($int_values);
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// Octal array
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$octal_values = array(0 => 056, 1 => 023, 2 => 090,
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3 => 015, 4 => -045, 5 => 01, 6 => -078);
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echo "\n-- Sorting Octal array --\n";
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var_dump( usort($octal_values, 'cmp_function') );
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var_dump($octal_values);
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// Hexadecimal array
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$hex_values = array(0 => 0xAE, 1 => 0x2B, 2 => 0X10,
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3 => -0xCF, 4 => 0X12, 5 => -0XF2);
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echo "\n-- Sorting Hex array --\n";
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var_dump( usort($hex_values, 'cmp_function') );
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var_dump($hex_values);
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// Float array
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$float_values = array( 0 => 10.2, 1 => 2.4, 2 => -3.4,
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3 => 0, 4 => 0.5, 5 => 7.3e3, 6 => -9.34E-2);
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echo "\n-- Sorting Float array --\n";
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var_dump( usort($float_values, 'cmp_function') );
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var_dump($float_values);
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// empty array
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$empty_array = array();
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echo "\n-- Sorting empty array --\n";
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var_dump( usort($empty_array, 'cmp_function') );
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var_dump($empty_array);
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?>
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===DONE===
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--EXPECTF--
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*** Testing usort() : usage variation ***
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-- Sorting Integer array --
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bool(true)
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array(9) {
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[0]=>
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int(-1200)
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[1]=>
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int(-3)
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[2]=>
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int(0)
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[3]=>
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int(2)
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[4]=>
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int(3)
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[5]=>
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int(25)
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[6]=>
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int(100)
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[7]=>
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int(150)
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[8]=>
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int(350)
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}
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-- Sorting Octal array --
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bool(true)
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array(7) {
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[0]=>
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int(-37)
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[1]=>
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int(-7)
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[2]=>
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int(0)
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[3]=>
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int(1)
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[4]=>
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int(13)
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[5]=>
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int(19)
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[6]=>
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int(46)
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}
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-- Sorting Hex array --
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bool(true)
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array(6) {
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[0]=>
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int(-242)
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[1]=>
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int(-207)
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[2]=>
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int(16)
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[3]=>
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int(18)
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[4]=>
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int(43)
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[5]=>
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int(174)
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}
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-- Sorting Float array --
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bool(true)
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array(7) {
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[0]=>
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float(-3.4)
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[1]=>
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float(-0.0934)
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[2]=>
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int(0)
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[3]=>
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float(0.5)
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[4]=>
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float(2.4)
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[5]=>
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float(10.2)
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[6]=>
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float(7300)
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}
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-- Sorting empty array --
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bool(true)
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array(0) {
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}
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===DONE===
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