PHP学习：PHP错误机制知识汇总

error_reporting(E_ALL);
ini_set('display_errors', 'On'); 

// Fatal error: Call to undefined function hpinfo() in /tmp/php/index.php on line 5
hpinfo(); //E_ERROR 

// Fatal error: Uncaught exception 'Exception' with message 'test exception' in /tmp/php/index.php:5 Stack trace: #0 {main} thrown in /tmp/php/index.php on line 5
throw new \Exception("test exception"); 

//Warning: include(a.php): failed to open stream: No such file or directory in /tmp/php/index.php on line 7
//Warning: include(): Failed opening 'a.php' for inclusion (include_path='.:/usr/share/pear:/usr/share/php') in /tmp/php/index.php on line 7
include("a.php"); //E_WARNING 

//Notice: Undefined variable: b in /tmp/php/index.php on line 9
$a = $b; //E_NOTICE 

// Parse error: syntax error, unexpected '=' in /tmp/php/index.php on line 20
z=1; // E_PARSE 

// Strict Standards: Only variables should be passed by reference in /tmp/php/index.php on line 17
function change (&$var) {
$var += 10;
}
$var = 1;
change(++$var);
// E_STRICT 

//Catchable fatal error: Argument 1 passed to testCall() must be an instance of A, instance of B given, called in /tmp/php/index.php on line 37 and defined in /tmp/php/index.php on line 33
class A {
}
class B {
}
function testCall(A $a) {
}
$b = new B();
testCall($b); 

// Deprecated: curl_setopt(): The usage of the @filename API for file uploading is deprecated. Please use the CURLFile class instead in /tmp/php/index.php on line 42
$ch = curl_init("http://www.remotesite.com/upload.php");
curl_setopt($ch, CURLOPT_POSTFIELDS, array('fileupload' => '@'. "test")); 

trigger_error("Cannot divide by zero", E_USER_ERROR);
// E_USER_ERROR
// E_USER_WARING
// E_USER_NOTICE
// E_USER_DEPRECATED 

error_reporting = E_ALL // 报告错误级别,什么级别的
error_log = /tmp/php_errors.log // php中的错误显示的日志位置
display_errors = On // 是否把错误展示在输出上,这个输出可能是页面,也可能是stdout
display_startup_errors = On // 是否把启动过程的错误信息显示在页面上,记得上面说的有几个Core类型的错误是启动时候发生的,这个就是控制这些错误是否显示页面的.
log_errors = On // 是否要记录错误日志
log_errors_max_len = 1024 // 错误日志的最大长度
ignore_repeated_errors = Off // 是否忽略重复的错误
track_errors = Off // 是否使用全局变量$php_errormsg来记录最后一个错误
xmlrpc_errors = 0 //是否使用XML-RPC的错误信息格式记录错误
xmlrpc_error_number = 0 // 用作 XML-RPC faultCode 元素的值.
html_errors = On // 是否把输出中的函数等信息变为HTML链接
docref_root = http://manual/en/ // 如果html_errors开启了,这个链接的根路径是什么
fastcgi.logging = 0 // 是否把php错误抛出到fastcgi中 

error_reporting(E_ALL);
ini_set('ignore_repeated_errors', 1);
ini_set('ignore_repeated_source', 1);
$a = $c; $a = $c; //E_NOTICE
//Notice: Undefined variable: c in /tmp/php/index.php on line 20 

error_reporting(E_ALL);
ini_set('html_errors', 1);
ini_set('docref_root', "https://secure.php.net/manual/zh/");
include("a2.php"); //E_WARNING 

error_log = /var/log/php-fpm/error.log // php-fpm自身的日志
log_level = notice // php-fpm自身的日志记录级别
php_flag[display_errors] = off // 覆盖php.ini中的某个配置变量,可被程序中的ini_set覆盖
php_value[display_errors] = off // 同php_flag
php_admin_value[error_log] = /tmp/www-error.log // 覆盖php.ini中的某个配置变量,不可被程序中的ini_set覆盖
php_admin_flag[log_errors] = on // 同php_admin_value
catch_workers_output = yes // 是否抓取fpmworker的输出
request_slowlog_timeout = 0 // 慢日志时长
slowlog = /var/log/php-fpm/www-slow.log // 慢日志记录