settype

(PHP 4, PHP 5, PHP 7)

settype — 锟斤拷锟矫憋拷锟斤拷锟斤拷锟斤拷锟斤拷

说锟斤拷

settype ( mixed &$var , string $type ) : bool

锟斤拷锟斤拷锟斤拷 var 锟斤拷锟斤拷锟斤拷锟斤拷锟矫筹拷 type锟斤拷

锟斤拷锟斤拷

var

要转锟斤拷锟侥憋拷锟斤拷锟斤拷

type

type 锟侥匡拷锟斤拷值为锟斤拷

  • "boolean" 锟斤拷锟斤拷为"bool"锟斤拷锟斤拷 PHP 4.2.0 锟斤拷
  • "integer" 锟斤拷锟斤拷为"int"锟斤拷锟斤拷 PHP 4.2.0 锟斤拷
  • "float" 锟斤拷只锟斤拷 PHP 4.2.0 之锟斤拷锟斤拷锟绞癸拷茫锟斤拷锟斤拷诰砂姹撅拷锟绞癸拷玫锟�"double"锟斤拷锟斤拷停锟矫ｏ拷
  • "string"
  • "array"
  • "object"
  • "null" 锟斤拷锟斤拷 PHP 4.2.0 锟斤拷

锟斤拷锟斤拷值

锟缴癸拷时锟斤拷锟斤拷 TRUE锟斤拷 锟斤拷锟斤拷锟斤拷失锟斤拷时锟斤拷锟斤拷 FALSE锟斤拷

锟斤拷锟斤拷

Example #1 settype() 示锟斤拷

<?php
$foo = "5bar"; // string
$bar = true;   // boolean

settype($foo, "integer"); // $foo 锟斤拷锟斤拷锟斤拷 5   (integer)
settype($bar, "string");  // $bar 锟斤拷锟斤拷锟斤拷 "1" (string)
?>

注锟斤拷

Note:

Maximum value for "int" is PHP_INT_MAX.

锟轿硷拷