hphp/test/zend/bad/ext-standard-general_functions/is_int.php

   1 <?php
   2 /* Prototype: bool is_int ( mixed $var );
   3  * Description: Finds whether the given variable is an integer
   4  */
   5
   6 echo "*** Testing is_int(), is_integer() & is_long()  with valid integer values ***\n";
   7 // different valid  integer vlaues
   8 $valid_ints = array(
   9   0,
  10   1,
  11   -1,
  12   -2147483648, // max negative integer value
  13   -2147483647,
  14   2147483647,  // max positive integer value
  15   2147483640,
  16   0x123B,      // integer as hexadecimal
  17   0x12ab,
  18   0Xfff,
  19   0XFA,
  20   -0x80000000, // max negative integer as hexadecimal
  21   0x7fffffff,  // max postive integer as hexadecimal
  22   0x7FFFFFFF,  // max postive integer as hexadecimal
  23   0123,        // integer as octal
  24   01912,       // should be quivalent to octal 1
  25   -020000000000, // max negative integer as octal
  26   017777777777,  // max positive integer as octal
  27 );
  28 /* loop to check that is_int() recognizes different
  29    integer values, expected output: bool(true) */
  30 $loop_counter = 1;
  31 foreach ($valid_ints as $int_val ) {
  32    echo "--Iteration $loop_counter--\n"; $loop_counter++;
  33    var_dump( is_int($int_val) );
  34    var_dump( is_integer($int_val) );
  35    var_dump( is_long($int_val) );
  36 }
  37
  38 echo "\n*** Testing is_int(), is_integer() & is_long() with  non integer values ***\n";
  39
  40 // resource type variable
  41 $fp = fopen (__FILE__, "r");
  42 $dfp = opendir ( dirname(__FILE__) );
  43 // unset variable
  44
  45 $unset_var = 10;
  46 unset ($unset_var);
  47
  48 // other types in a array
  49 $not_int_types = array (
  50   /* float values */
  51   -2147483649, // float value
  52   2147483648,  // float value
  53   -0x80000001, // float value, beyond max negative int
  54   0x800000001, // float value, beyond max positive int
  55   020000000001, // float value, beyond max positive int
  56   -020000000001, // float value, beyond max negative int
  57   0.0,
  58   -0.1,
  59   1.0,
  60   1e5,
  61   -1e6,
  62   1E8,
  63   -1E9,
  64   10.0000000000000000005,
  65   10.5e+5,
  66
  67   /* objects */
  68   new stdclass,
  69
  70   /* resources */
  71   $fp,
  72   $dfp,
  73
  74   /* arrays */
  75   array(),
  76   array(0),
  77   array(1),
  78   array(NULL),
  79   array(null),
  80   array("string"),
  81   array(true),
  82   array(TRUE),
  83   array(false),
  84   array(FALSE),
  85   array(1,2,3,4),
  86   array(1 => "One", "two" => 2),
  87
  88   /* strings */
  89   "",
  90   '',
  91   "0",
  92   '0',
  93   "1",
  94   '1',
  95   "\x01",
  96   '\x01',
  97   "\01",
  98   '\01',
  99   'string',
 100   "string",
 101   "true",
 102   "FALSE",
 103   'false',
 104   'TRUE',
 105   "NULL",
 106   'null',
 107
 108   /* booleans */
 109   true,
 110   false,
 111   TRUE,
 112   FALSE,
 113
 114   /* undefined and unset vars */
 115   @$unset_var,
 116   @$undefined_var
 117 );
 118 /* loop through the $not_int_types to see working of
 119    is_int() on non integer types, expected output: bool(false) */
 120 $loop_counter = 1;
 121 foreach ($not_int_types as $type ) {
 122    echo "--Iteration $loop_counter--\n"; $loop_counter++;
 123    var_dump( is_int($type) );
 124    var_dump( is_integer($type) );
 125    var_dump( is_long($type) );
 126 }
 127
 128 echo "\n*** Testing error conditions ***\n";
 129 //Zero argument
 130 var_dump( is_int() );
 131 var_dump( is_integer() );
 132 var_dump( is_long() );
 133
 134 //arguments more than expected
 135 var_dump( is_int(TRUE, FALSE) );
 136 var_dump( is_integer(TRUE, FALSE) );
 137 var_dump( is_long(TRUE, FALSE) );
 138
 139 echo "Done\n";
 140
 141 // close the resources
 142 fclose($fp);
 143 closedir($dfp);
 144
 145 ?>