预定义常量
下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。
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SSH2_FINGERPRINT_MD5(integer) - Flag to ssh2_fingerprint() requesting hostkey fingerprint as an MD5 hash.
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SSH2_FINGERPRINT_SHA1(integer) - Flag to ssh2_fingerprint() requesting hostkey fingerprint as an SHA1 hash.
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SSH2_FINGERPRINT_HEX(integer) - Flag to ssh2_fingerprint() requesting hostkey fingerprint as a string of hexits.
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SSH2_FINGERPRINT_RAW(integer) - Flag to ssh2_fingerprint() requesting hostkey fingerprint as a raw string of 8-bit characters.
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SSH2_TERM_UNIT_CHARS(integer) -
Flag to ssh2_shell() specifying that
widthandheightare provided as character sizes. -
SSH2_TERM_UNIT_PIXELS(integer) -
Flag to ssh2_shell() specifying that
widthandheightare provided in pixel units. -
SSH2_DEFAULT_TERM_WIDTH(integer) - Default terminal width requested by ssh2_shell().
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SSH2_DEFAULT_TERM_HEIGHT(integer) - Default terminal height requested by ssh2_shell().
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SSH2_DEFAULT_TERM_UNIT(integer) - Default terminal units requested by ssh2_shell().
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SSH2_STREAM_STDIO(integer) - Flag to ssh2_fetch_stream() requesting STDIO subchannel.
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SSH2_STREAM_STDERR(integer) - Flag to ssh2_fetch_stream() requesting STDERR subchannel.
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SSH2_DEFAULT_TERMINAL(string) - Default terminal type (e.g. vt102, ansi, xterm, vanilla) requested by ssh2_shell().