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pg_trace

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pg_trace

(PHP 4 >= 4.0.1, PHP 5)

pg_trace启动一个 PostgreSQL 连接的追踪功能

说明

bool pg_trace ( string $pathname [, string $mode [, resource $connection ]] )

pg_trace() 启动 PostgreSQL 前端/后端通讯的追踪并记录到 pathname 指定的文件中。要完全理解结果,用户需要熟悉 PostgreSQL 通讯协议的本质。对不熟悉的用户来说,追踪发送到服务器的查询错误依然有用,例如可以用 grep '^To backend' trace.log 来查看哪些查询实际上被发送到了 PostgreSQL 服务器。更多信息参考 PostgreSQL 手册。

参数 pathnamemodefopen()(mode 默认为 'w') 中的一样。connection 指定了要追踪的连接,默认为上一个打开的连接。

如果 pathname 可以作为日志文件打开,则 pg_trace() 返回 TRUE,否则返回 FALSE

参见 fopen()pg_untrace()


  • pg_affected_rows
  • pg_cancel_query
  • pg_client_encoding
  • pg_close
  • pg_connect
  • pg_connection_busy
  • pg_connection_reset
  • pg_connection_status
  • pg_convert
  • pg_copy_from
  • pg_copy_to
  • pg_dbname
  • pg_delete
  • pg_end_copy
  • pg_escape_bytea
  • pg_escape_identifier
  • pg_escape_literal
  • pg_escape_string
  • pg_execute
  • pg_fetch_all
  • pg_fetch_all_columns
  • pg_fetch_array
  • pg_fetch_assoc
  • pg_fetch_object
  • pg_fetch_result
  • pg_fetch_row
  • pg_field_is_null
  • pg_field_name
  • pg_field_num
  • pg_field_prtlen
  • pg_field_size
  • pg_field_table
  • pg_field_type
  • pg_field_type_oid
  • pg_free_result
  • pg_get_notify
  • pg_get_pid
  • pg_get_result
  • pg_host
  • pg_insert
  • pg_last_error
  • pg_last_notice
  • pg_last_oid
  • pg_lo_close
  • pg_lo_create
  • pg_lo_export
  • pg_lo_import
  • pg_lo_open
  • pg_lo_read
  • pg_lo_read_all
  • pg_lo_seek
  • pg_lo_tell
  • pg_lo_unlink
  • pg_lo_write
  • pg_meta_data
  • pg_num_fields
  • pg_num_rows
  • pg_options
  • pg_parameter_status
  • pg_pconnect
  • pg_ping
  • pg_port
  • pg_prepare
  • pg_put_line
  • pg_query
  • pg_query_params
  • pg_result_error
  • pg_result_error_field
  • pg_result_seek
  • pg_result_status
  • pg_select
  • pg_send_execute
  • pg_send_prepare
  • pg_send_query
  • pg_send_query_params
  • pg_set_client_encoding
  • pg_set_error_verbosity
  • pg_trace
  • pg_transaction_status
  • pg_tty
  • pg_unescape_bytea
  • pg_untrace
  • pg_update
  • pg_version
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