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[英]Why can't my local PHP function see the $test variable, and how can I get its value?
[英]Why can't these functions see my variable?
為什么會出現此錯誤:
未定義的變量key_2captcha
我運行以下代碼將驗證碼傳遞給2captcha服務器:
<?php
$id_Captcha=0;
$key_2captcha="key2captcha";
function send_captcha($base_file){
$ch = curl_init("http://2captcha.com/in.php");
curl_setopt($ch, CURLOPT_POSTFIELDS,
array('method'=>"base64",
'key'=>$key_2captcha,
'numeric'=>1,
'max_len'=>1,
'body'=>$base_file,
'submit'=>'download and get the ID'));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$postResult = curl_exec($ch);
curl_close($ch);
return $postResult;
}
function getSolveCaptcha($id_captcha){
$c = curl_init("http://2captcha.com/res.php?key=".$key_2captcha."&action=get&id=".$id_captcha);
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
$postResult = curl_exec($c);
curl_close($c);
return $postResult;
}
?>
我在XAMPP中運行此代碼。
我認為您有一個可變范圍解析問題。
如果要將變量用於通用函數,則必須在函數簽名中將此變量作為參數傳遞。 不要將變量用作全局變量,因為這是一種不好的做法,您必須創建通用函數,因此必須使用通用參數。
試試這個代碼:
<?php
$id_Captcha=0;
$key_2captcha="key2captcha";
function send_captcha($base_file, $key_2captcha){
$ch = curl_init("http://2captcha.com/in.php");
curl_setopt($ch, CURLOPT_POSTFIELDS,
array('method'=>"base64",
'key'=>$key_2captcha,
'numeric'=>1,
'max_len'=>1,
'body'=>$base_file,
'submit'=>'download and get the ID'));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$postResult = curl_exec($ch);
curl_close($ch);
return $postResult;
}
function getSolveCaptcha($id_captcha, $key_2captcha){
$c = curl_init("http://2captcha.com/res.php?key=".$key_2captcha."&action=get&id=".$id_captcha);
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
$postResult = curl_exec($c);
curl_close($c);
return $postResult;
}
//Call Example
send_captcha($base_file, $key_2captcha);
?>
使用以下代碼,將$ key_2captcha與global一起使用。 在兩個功能上。 讀取PHP中的變量范圍
function getSolveCaptcha($id_captcha){
global $key_2captcha;
$c = curl_init("http://2captcha.com/res.php?key=".$key_2captcha."&action=get&id=".$id_captcha);
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
$postResult = curl_exec($c);
curl_close($c);
return $postResult;
}
將以下代碼與$GLOBALS
—引用全局范圍內的所有可用變量
<?php
$id_Captcha=0;
$key_2captcha="key2captcha";
function send_captcha($base_file){
$ch = curl_init("http://2captcha.com/in.php");
curl_setopt($ch, CURLOPT_POSTFIELDS,
array('method'=>"base64",
'key'=>$GLOBALS['key_2captcha'],
'numeric'=>1,
'max_len'=>1,
'body'=>$base_file,
'submit'=>'download and get the ID'));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$postResult = curl_exec($ch);
curl_close($ch);
return $postResult;
}
function getSolveCaptcha($id_captcha){
$c = curl_init("http://2captcha.com/res.php?key=".$GLOBALS['key_2captcha']."&action=get&id=".$id_captcha);
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
$postResult = curl_exec($c);
curl_close($c);
return $postResult;
}
?>
引用PHP.net
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