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156 lines
2.9 KiB
PHP
156 lines
2.9 KiB
PHP
--TEST--
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Test key() function : usage variations
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--FILE--
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<?php
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/* Prototype : mixed key(array $array_arg)
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* Description: Return the key of the element currently pointed to by the internal array pointer
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* Source code: ext/standard/array.c
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*/
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/*
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* Pass arrays where keys are different data types as $array_arg to key() to test behaviour
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*/
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echo "*** Testing key() : usage variations ***\n";
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//get an unset variable
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$unset_var = 10;
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unset ($unset_var);
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// heredoc string
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$heredoc = <<<EOT
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hello world
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EOT;
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// unexpected values to be passed as $array_arg
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$inputs = array(
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// int data
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/*1*/ 'int' => array(
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0 => 'zero',
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1 => 'one',
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12345 => 'positive',
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-2345 => 'negative',
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),
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// float data
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/*2*/ 'float' => array(
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10.5 => 'positive',
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-10.5 => 'negative',
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.5 => 'half',
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),
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/*3*/ 'extreme floats' => array(
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12.3456789000e6 => 'large',
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12.3456789000E-10 => 'small',
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),
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// null data
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/*4*/ 'null uppercase' => array(
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NULL => 'null 1',
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),
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/*5*/ 'null lowercase' => array(
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null => 'null 2',
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),
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// boolean data
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/*6*/ 'bool lowercase' => array(
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true => 'lowert',
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false => 'lowerf',
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),
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/*7*/ 'bool uppercase' => array(
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TRUE => 'uppert',
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FALSE => 'upperf',
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),
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// empty data
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/*8*/ 'empty double quotes' => array(
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"" => 'emptyd',
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),
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/*9*/ 'empty single quotes' => array(
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'' => 'emptys',
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),
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// string data
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/*10*/ 'string' => array(
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"stringd" => 'stringd',
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'strings' => 'strings',
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$heredoc => 'stringh',
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),
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// undefined data
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/*11*/ 'undefined' => array(
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@$undefined_var => 'undefined',
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),
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// unset data
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/*12*/ 'unset' => array(
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@$unset_var => 'unset',
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),
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);
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// loop through each element of $inputs to check the behavior of key()
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$iterator = 1;
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foreach($inputs as $key => $input) {
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echo "\n-- Iteration $iterator : $key data --\n";
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while (key($input) !== NULL) {
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var_dump(key($input));
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next($input);
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}
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$iterator++;
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};
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?>
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===DONE===
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--EXPECTF--
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*** Testing key() : usage variations ***
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-- Iteration 1 : int data --
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int(0)
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int(1)
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int(12345)
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int(-2345)
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-- Iteration 2 : float data --
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int(10)
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int(-10)
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int(0)
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-- Iteration 3 : extreme floats data --
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int(12345678)
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int(0)
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-- Iteration 4 : null uppercase data --
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string(0) ""
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-- Iteration 5 : null lowercase data --
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string(0) ""
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-- Iteration 6 : bool lowercase data --
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int(1)
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int(0)
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-- Iteration 7 : bool uppercase data --
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int(1)
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int(0)
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-- Iteration 8 : empty double quotes data --
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string(0) ""
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-- Iteration 9 : empty single quotes data --
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string(0) ""
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-- Iteration 10 : string data --
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string(7) "stringd"
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string(7) "strings"
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string(11) "hello world"
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-- Iteration 11 : undefined data --
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string(0) ""
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-- Iteration 12 : unset data --
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string(0) ""
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===DONE===
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