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$argv — 传递给脚本的参数数组
包含当运行于命令行下时传递给当前脚本的参数的数组。
Note: 第一个参数总是当前脚本的文件名,因此 $argv[0] 就是脚本文件名。
Note: 这个变量仅在 register_argc_argv 打开时可用。
Example #1 $argv 范例
<?php
var_dump ( $argv );
?>
当使用这个命令执行:php script.php arg1 arg2 arg3
以上例程的输出类似于:
array(4) { [0]=> string(10) "script.php" [1]=> string(4) "arg1" [2]=> string(4) "arg2" [3]=> string(4) "arg3" }
[#1] php at simoneast dot net [2015-11-24 07:24:25]
Sometimes $argv can be null, such as when "register-argc-argv" is set to false. In some cases I've found the variable is populated correctly when running "php-cli" instead of just "php" from the command line (or cron).
[#2] KRowe [2015-05-12 09:55:12]
Improves on hamboy75's note by providing better support for positional arguments:
foreach ($argv as $arg) {
$e=explode("=",$arg);
if(count($e)==2)
$_GET[$e[0]]=$e[1];
else
$_GET[]=$e[0];
}
var_dump($_GET);
Using this modification, arguments without an = are treated as positional (this is not web standard but generally works).
[#3] hamboy75 at example dot com [2013-11-05 15:20:51]
To use $_GET so you dont need to support both if it could be used from command line and from web browser.
foreach ($argv as $arg) {
$e=explode("=",$arg);
if(count($e)==2)
$_GET[$e[0]]=$e[1];
else
$_GET[$e[0]]=0;
}
[#4] Jesse [2013-01-30 23:55:00]
If your script is read from standard input or with the -r option, $argv[0] will be "-".
If you use the "--" option to separate PHP's arguments from your script's arguments, $argv[1] will be "--" if your script is read from a file. But if your script is read from standard input or with the -r option, the "--" will be removed.
[#5] tufan dot oezduman at googlemail dot com [2011-08-22 09:06:45]
Please note that, $argv and $argc need to be declared global, while trying to access within a class method.
<?php
class A
{
public static function b()
{
var_dump($argv);
var_dump(isset($argv));
}
}
A::b();
?>
will output NULL bool(false) with a notice of "Undefined variable ..."
whereas global $argv fixes that.
[#6] Steve Schmitt [2009-09-14 16:57:25]
If you come from a shell scripting background, you might expect to find this topic under the heading "positional parameters".