how_tos:functions:fread

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- functions
  - adc_read
  - aes_decrypt
  - aes_encrypt
  - array
  - array_key
  - array_keys
  - array_resize
  - base64_decode
  - base64_encode
  - call_user_func
  - charat
  - chdir
  - chr
  - clear_watchdog
  - cos
  - debug
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  - die
  - disk_free_space
  - disk_status
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  - disk_type
  - download_info
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  - exec
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  - explode
  - f485open
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  - feof
  - fgets
  - file_exists
  - filesize
  - findfirst
  - findnext
  - firmwareupdate
  - flash_status
  - floatval
  - flush
  - fopen
  - fread
  - fread_unpack
  - freemem
  - freestack
  - fseek
  - fseropen
  - fsockopen
  - ftell
  - ftp_close
  - ftp_command
  - ftp_error
  - ftp_open
  - ftp_size
  - ftp_status
  - ftp_upload
  - function_exists
  - fwrite
  - fwrite_pack
  - get3gstat
  - get_csv_data
  - getcwd
  - getethstat
  - getmac
  - gettype
  - getusbstat
  - hash_hmac
  - header
  - htmlspecialchars
  - ieee754toint
  - implode
  - include
  - indexed_array
  - ini_get
  - ini_get_array
  - ini_put_array
  - ini_set
  - init_watchdog
  - inttoieee754
  - intval
  - is_array
  - is_float
  - is_int
  - is_numeric
  - is_string
  - isset
  - json_decode
  - json_encode
  - ln
  - log
  - log10
  - mail
  - max_execution_time
  - mb_add_dev
  - mb_delete_dev
  - mb_delete_device
  - mb_get_dev_by_id
  - mb_get_dev_by_index
  - mb_get_dev_by_name
  - mb_get_dev_info
  - mb_get_role_array
  - mb_get_status_by_role
  - mb_get_val_by_role
  - mb_num_devices
  - mb_queue_command
  - mb_scan_complete
  - mb_scan_percent
  - mb_send_command
  - mb_set_dev_var
  - mb_set_val_by_role
  - mb_start_scan
  - md5
  - md5_file
  - mem_dump
  - mem_usage
  - microtime
  - mkdir
  - mktime
  - mqtt_disconnect
  - mqtt_publish
  - mqtt_subscribe
  - mqttstat
  - net_disable3g
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  - netstat
  - number_format
  - nvram_backup
  - nvram_defrag
  - nvram_dump
  - nvram_free
  - nvram_get
  - nvram_restore
  - nvram_set
  - nvram_unset
  - ord
  - ow_first
  - ow_next
  - ow_read
  - ow_read_temp
  - ow_reset
  - ow_write
  - pack
  - phpinfo
  - pin_configure
  - pin_get
  - pin_set
  - ping
  - power
  - print
  - print_r
  - printf
  - process_kill
  - process_list
  - rand
  - reboot
  - register_callback
  - rename
  - reset
  - rmdir
  - send_sms
  - session_destroy
  - session_is_new
  - session_start
  - set_cert_key
  - set_search_path
  - setethpower
  - setpriority
  - settime
  - setusbpower
  - sha1
  - sin
  - sizeof
  - sleep
  - snmp_trap_send
  - spi_clearcs
  - spi_read
  - spi_setcs
  - spi_write
  - sprintf
  - sqr
  - sqrt
  - stats
  - str_replace
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  - strlen
  - strpos
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  - strtolower
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  - strval
  - substr
  - sys_get
  - sys_set
  - tar_finish
  - tar_put
  - time
  - timefromfat
  - trim
  - ucfirst
  - unlink
  - unpack
  - untar
  - uptime
  - urldecode
  - urlencode
- library_functions
- ajax_generation
- blockly_home_page_hook
- blockly_programming_the_wattmon
- functions
- modbus_functions
- mqtt_configuration
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- uphp_special_variables
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