Linux下 PHP socket 错误码预定义常量， 对应数值，错误信息
Linux下 PHP socket 错误码预定义常量， 对应数值，错误信息！
php版本：
PHP 7.4.0 (cli) (built: Nov 27 2019 10:14:18) ( ZTS Visual C++ 2017 x64 ) Copyright (c) The PHP Group Zend Engine v3.4.0, Copyright (c) Zend Technologies with Xdebug v2.9.2, Copyright (c) 2002-2020, by Derick Rethans
| 错误码预定义常量 | 数值 | 错误信息 |
|---|---|---|
| SOCKET_EPERM | 1 | Operation not permitted |
| SOCKET_ENOENT | 2 | No such file or directory |
| SOCKET_EINTR | 4 | Interrupted system call |
| SOCKET_EIO | 5 | Input/output error |
| SOCKET_ENXIO | 6 | No such device or address |
| SOCKET_E2BIG | 7 | Argument list too long |
| SOCKET_EBADF | 9 | Bad file descriptor |
| SOCKET_EAGAIN | 11 | Resource temporarily unavailable |
| SOCKET_ENOMEM | 12 | Cannot allocate memory |
| SOCKET_EACCES | 13 | Permission denied |
| SOCKET_EFAULT | 14 | Bad address |
| SOCKET_ENOTBLK | 15 | Block device required |
| SOCKET_EBUSY | 16 | Device or resource busy |
| SOCKET_EEXIST | 17 | File exists |
| SOCKET_EXDEV | 18 | Invalid cross-device link |
| SOCKET_ENODEV | 19 | No such device |
| SOCKET_ENOTDIR | 20 | Not a directory |
| SOCKET_EISDIR | 21 | Is a directory |
| SOCKET_EINVAL | 22 | Invalid argument |
| SOCKET_ENFILE | 23 | Too many open files in system |
| SOCKET_EMFILE | 24 | Too many open files |
| SOCKET_ENOTTY | 25 | Inappropriate ioctl for device |
| SOCKET_ENOSPC | 28 | No space left on device |
| SOCKET_ESPIPE | 29 | Illegal seek |
| SOCKET_EROFS | 30 | Read-only file system |
| SOCKET_EMLINK | 31 | Too many links |
| SOCKET_EPIPE | 32 | Broken pipe |
| SOCKET_ENAMETOOLONG | 36 | File name too long |
| SOCKET_ENOLCK | 37 | No locks available |
| SOCKET_ENOSYS | 38 | Function not implemented |
| SOCKET_ENOTEMPTY | 39 | Directory not empty |
| SOCKET_ELOOP | 40 | Too many levels of symbolic links |
| SOCKET_EWOULDBLOCK | 11 | Resource temporarily unavailable |
| SOCKET_ENOMSG | 42 | No message of desired type |
| SOCKET_EIDRM | 43 | Identifier removed |
| SOCKET_ECHRNG | 44 | Channel number out of range |
| SOCKET_EL2NSYNC | 45 | Level 2 not synchronized |
| SOCKET_EL3HLT | 46 | Level 3 halted |
| SOCKET_EL3RST | 47 | Level 3 reset |
| SOCKET_ELNRNG | 48 | Link number out of range |
| SOCKET_EUNATCH | 49 | Protocol driver not attached |
| SOCKET_ENOCSI | 50 | No CSI structure available |
| SOCKET_EL2HLT | 51 | Level 2 halted |
| SOCKET_EBADE | 52 | Invalid exchange |
| SOCKET_EBADR | 53 | Invalid request descriptor |
| SOCKET_EXFULL | 54 | Exchange full |
| SOCKET_ENOANO | 55 | No anode |
| SOCKET_EBADRQC | 56 | Invalid request code |
| SOCKET_EBADSLT | 57 | Invalid slot |
| SOCKET_ENOSTR | 60 | Device not a stream |
| SOCKET_ENODATA | 61 | No data available |
| SOCKET_ETIME | 62 | Timer expired |
| SOCKET_ENOSR | 63 | Out of streams resources |
| SOCKET_ENONET | 64 | Machine is not on the network |
| SOCKET_EREMOTE | 66 | Object is remote |
| SOCKET_ENOLINK | 67 | Link has been severed |
| SOCKET_EADV | 68 | Advertise error |
| SOCKET_ESRMNT | 69 | Srmount error |
| SOCKET_ECOMM | 70 | Communication error on send |
| SOCKET_EPROTO | 71 | Protocol error |
| SOCKET_EMULTIHOP | 72 | Multihop attempted |
| SOCKET_EBADMSG | 74 | Bad message |
| SOCKET_ENOTUNIQ | 76 | Name not unique on network |
| SOCKET_EBADFD | 77 | File descriptor in bad state |
| SOCKET_EREMCHG | 78 | Remote address changed |
| SOCKET_ERESTART | 85 | Interrupted system call should be restarted |
| SOCKET_ESTRPIPE | 86 | Streams pipe error |
| SOCKET_EUSERS | 87 | Too many users |
| SOCKET_ENOTSOCK | 88 | Socket operation on non-socket |
| SOCKET_EDESTADDRREQ | 89 | Destination address required |
| SOCKET_EMSGSIZE | 90 | Message too long |
| SOCKET_EPROTOTYPE | 91 | Protocol wrong type for socket |
| SOCKET_ENOPROTOOPT | 92 | Protocol not available |
| SOCKET_EPROTONOSUPPORT | 93 | Protocol not supported |
| SOCKET_ESOCKTNOSUPPORT | 94 | Socket type not supported |
| SOCKET_EOPNOTSUPP | 95 | Operation not supported |
| SOCKET_EPFNOSUPPORT | 96 | Protocol family not supported |
| SOCKET_EAFNOSUPPORT | 97 | Address family not supported by protocol |
| SOCKET_EADDRINUSE | 98 | Address already in use |
| SOCKET_EADDRNOTAVAIL | 99 | Cannot assign requested address |
| SOCKET_ENETDOWN | 100 | Network is down |
| SOCKET_ENETUNREACH | 101 | Network is unreachable |
| SOCKET_ENETRESET | 102 | Network dropped connection on reset |
| SOCKET_ECONNABORTED | 103 | Software caused connection abort |
| SOCKET_ECONNRESET | 104 | Connection reset by peer |
| SOCKET_ENOBUFS | 105 | No buffer space available |
| SOCKET_EISCONN | 106 | Transport endpoint is already connected |
| SOCKET_ENOTCONN | 107 | Transport endpoint is not connected |
| SOCKET_ESHUTDOWN | 108 | Cannot send after transport endpoint shutdown |
| SOCKET_ETOOMANYREFS | 109 | Too many references: cannot splice |
| SOCKET_ETIMEDOUT | 110 | Connection timed out |
| SOCKET_ECONNREFUSED | 111 | Connection refused |
| SOCKET_EHOSTDOWN | 112 | Host is down |
| SOCKET_EHOSTUNREACH | 113 | No route to host |
| SOCKET_EALREADY | 114 | Operation already in progress |
| SOCKET_EINPROGRESS | 115 | Operation now in progress |
| SOCKET_EISNAM | 120 | Is a named type file |
| SOCKET_EREMOTEIO | 121 | Remote I/O error |
| SOCKET_EDQUOT | 122 | Disk quota exceeded |
| SOCKET_ENOMEDIUM | 123 | No medium found |
| SOCKET_EMEDIUMTYPE | 124 | Wrong medium type |