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242 lines
4.1 KiB
PHP
242 lines
4.1 KiB
PHP
--TEST--
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Test is_scalar() function
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--FILE--
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<?php
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/* Prototype: bool is_scalar ( mixed $var );
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* Description: Finds whether a variable is a scalar (i.e integer, float, string or boolean)
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*/
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echo "*** Testing basic operations ***\n";
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$scalar_variables = array(
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0, // integers
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1,
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-45678,
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0x5FF, // hexadecimal as integer
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0X566,
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-0xAAF,
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-0XCCF,
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01234, // octal as integer
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-0126,
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0.0, // floats
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-1.0,
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1e5,
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-1e7,
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1.6E7,
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475.e-8,
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784.e+30,
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98.45E+40,
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.5E-40,
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"", // strings
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'',
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" ",
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' ',
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"string",
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'string',
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"0", // numeric as string
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"40",
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"50.696",
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"0x534",
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"0X534",
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TRUE, // boolean
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FALSE,
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true,
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false
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);
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/* loop through each valid scalar variables in $scalar_variables
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and see the working of is_scalar(), expected output: bool(true)
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*/
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$loop_counter = 1;
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foreach($scalar_variables as $scalar) {
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echo "-- Iteration $loop_counter --\n"; $loop_counter++;
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var_dump( is_scalar($scalar) );
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}
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echo "\n*** Testing possible variations ***\n";
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// different scalar variables which are unset
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$int_var = 10;
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$float_var = 1e5;
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$string_var = "string";
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$boolean_var = true;
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$object = new stdclass;
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$array = array(10);
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$resource = opendir('.');
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unset($int_var, $float_var, $string_var, $boolean_var, $object, $array, $resource);
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// resources
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$fp = fopen(__FILE__, "r");
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$dfp = opendir(".");
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$variation_array = array(
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NULL,
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null,
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array(), // arrays
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array(NULL),
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array(true),
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array(0),
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array(1,2,3,4),
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$fp, // resources
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$dfp,
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new stdclass, // object
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@$int_var, // scalars that are unset
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@$float_var,
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@$string_var,
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@$boolean_var,
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@$array, // non scalars that are unset
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@$object,
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@$resource,
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@$undefined_var // undefined variable
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);
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/* loop through each element of $variation_array to see the
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working of is_scalar on non-scalar values, expected output: bool(false)
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*/
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$loop_counter = 1;
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foreach( $variation_array as $value ) {
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echo "-- Iteration $loop_counter --\n"; $loop_counter++;
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var_dump( is_scalar($value) );
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}
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echo "\n*** Testing error conditions ***\n";
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// Zero arguments
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var_dump( is_scalar() );
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// Arguments more than expected
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var_dump( is_scalar( $scalar_variables[2], $scalar_variables[2]) );
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var_dump( is_scalar( new stdclass, new stdclass) );
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echo "Done\n";
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?>
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--CLEAN--
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// close the resources used
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fclose($fp);
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closedir($dfp);
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--EXPECTF--
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*** Testing basic operations ***
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-- Iteration 1 --
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bool(true)
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-- Iteration 2 --
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bool(true)
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-- Iteration 3 --
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bool(true)
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-- Iteration 4 --
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bool(true)
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-- Iteration 5 --
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bool(true)
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-- Iteration 6 --
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bool(true)
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-- Iteration 7 --
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bool(true)
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-- Iteration 8 --
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bool(true)
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-- Iteration 9 --
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bool(true)
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-- Iteration 10 --
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bool(true)
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-- Iteration 11 --
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bool(true)
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-- Iteration 12 --
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bool(true)
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-- Iteration 13 --
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bool(true)
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-- Iteration 14 --
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bool(true)
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-- Iteration 15 --
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bool(true)
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-- Iteration 16 --
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bool(true)
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-- Iteration 17 --
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bool(true)
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-- Iteration 18 --
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bool(true)
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-- Iteration 19 --
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bool(true)
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-- Iteration 20 --
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bool(true)
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-- Iteration 21 --
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bool(true)
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-- Iteration 22 --
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bool(true)
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-- Iteration 23 --
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bool(true)
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-- Iteration 24 --
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bool(true)
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-- Iteration 25 --
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bool(true)
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-- Iteration 26 --
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bool(true)
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-- Iteration 27 --
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bool(true)
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-- Iteration 28 --
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bool(true)
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-- Iteration 29 --
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bool(true)
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-- Iteration 30 --
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bool(true)
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-- Iteration 31 --
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bool(true)
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-- Iteration 32 --
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bool(true)
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-- Iteration 33 --
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bool(true)
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*** Testing possible variations ***
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-- Iteration 1 --
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bool(false)
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-- Iteration 2 --
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bool(false)
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-- Iteration 3 --
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bool(false)
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-- Iteration 4 --
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bool(false)
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-- Iteration 5 --
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bool(false)
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-- Iteration 6 --
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bool(false)
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-- Iteration 7 --
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bool(false)
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-- Iteration 8 --
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bool(false)
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-- Iteration 9 --
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bool(false)
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-- Iteration 10 --
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bool(false)
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-- Iteration 11 --
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bool(false)
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-- Iteration 12 --
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bool(false)
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-- Iteration 13 --
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bool(false)
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-- Iteration 14 --
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bool(false)
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-- Iteration 15 --
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bool(false)
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-- Iteration 16 --
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bool(false)
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-- Iteration 17 --
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bool(false)
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-- Iteration 18 --
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bool(false)
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*** Testing error conditions ***
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Warning: Wrong parameter count for is_scalar() in %s on line %d
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NULL
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Warning: Wrong parameter count for is_scalar() in %s on line %d
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NULL
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Warning: Wrong parameter count for is_scalar() in %s on line %d
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NULL
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Done
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