putenv
Description
The putenv of Options / Information for PHP sets the value of an environment variable.
Syntax
putenv(string $assignment): bool
Parameters
assignment
The setting
Return
Returns true on success or false on failure.
Examples
1 · assignment
<? $assignment = "MY_LOC_ENV_VAR=my local environment variable"; $return = putenv($assignment); var_export($return);
true
2 · getenv
<? $assignment = "MY_LOC_ENV_VAR=my local environment variable"; putenv($assignment); echo getenv("MY_LOC_ENV_VAR");
my local environment variable
3 · $_ENV
<? $_ENV["MY_LOC_ENV_VAR"] = "\$_ENV does not assign to putenv"; $assignment = "MY_LOC_ENV_VAR=putenv does not assign to \$_ENV"; putenv($assignment); echo $_ENV["MY_LOC_ENV_VAR"] . PHP_EOL; echo getenv("MY_LOC_ENV_VAR");
$_ENV does not assign to putenv putenv does not assign to $_ENV
Links
Options / Information
- assert
- assert_options
- cli_get_process_title
- cli_set_process_title
- dl
- extension_loaded
- gc_collect_cycles
- gc_disable
- gc_enable
- gc_enabled
- gc_mem_caches
- gc_status
- get_cfg_var
- get_current_user
- get_defined_constants
- get_extension_funcs
- get_include_path
- get_included_files
- get_loaded_extensions
- get_required_files
- get_resources
- getenv
- getlastmod
- getmygid
- getmyinode
- getmypid
- getmyuid
- getopt
- getrusage
- ini_alter
- ini_get
- ini_get_all
- ini_parse_quantity
- ini_restore
- ini_set
- memory_get_peak_usage
- memory_get_usage
- memory_reset_peak_usage
- php_ini_loaded_file
- php_ini_scanned_files
- php_sapi_name
- php_uname
- phpcredits
- phpinfo
- phpversion
- set_include_path
- set_time_limit
- sys_get_temp_dir
- version_compare
- zend_thread_id
- zend_version