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memory_get_usage

memory_get_usage

(PHP 4 >= 4.3.2, PHP 5)

memory_get_usageReturns the amount of memory allocated to PHP

说明

int memory_get_usage ([ bool $real_usage = false ] )

Returns the amount of memory, in bytes, that's currently being allocated to your PHP script.

参数

real_usage

Set this to TRUE to get the real size of memory allocated from system. If not set or FALSE only the memory used by emalloc() is reported.

返回值

Returns the memory amount in bytes.

更新日志

版本 说明
5.2.1 Compiling with --enable-memory-limit is no longer required for this function to exist.
5.2.0 real_usage was added.

范例

Example #1 A memory_get_usage() example

<?php
// This is only an example, the numbers below will
// differ depending on your system

echo memory_get_usage() . " "// 36640

$a str_repeat("Hello"4242);

echo 
memory_get_usage() . " "// 57960

unset($a);

echo 
memory_get_usage() . " "// 36744

?>

参见


  • assert
  • assert_options
  • dl
  • extension_loaded
  • gc_collect_cycles
  • gc_disable
  • gc_enable
  • gc_enabled
  • getenv
  • getlastmod
  • getmyinode
  • getopt
  • getrusage
  • get_cfg_var
  • get_current_user
  • get_defined_constants
  • get_extension_funcs
  • get_included_files
  • get_include_path
  • get_loaded_extensions
  • get_magic_quotes_gpc
  • get_magic_quotes_runtime
  • get_required_files
  • ini_alter
  • ini_get
  • ini_get_all
  • ini_restore
  • ini_set
  • magic_quotes_runtime
  • main
  • memory_get_peak_usage
  • memory_get_usage
  • phpcredits
  • phpversion
  • php_ini_loaded_file
  • php_ini_scanned_files
  • php_logo_guid
  • php_sapi_name
  • php_uname
  • putenv
  • restore_include_path
  • set_include_path
  • set_magic_quotes_runtime
  • set_time_limit
  • sys_get_temp_dir
  • version_compare
  • zend_logo_guid
  • zend_thread_id
  • zend_version
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