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$regerrstr returns the PCRE error string of the compile function for the last regex call made, if any.

A regular expression must be compiled first, and then it's executed against a string.

If an error occurs in the compile function, $regerrstr is filled with an error string, corresponding to a positive number (listed below), but only the string is returned.

$regex and similar regex functions reporting number of matches ($regsubex with output variable or $regsub) will report a value of -14.

This value actually comes from the exec function, this is for convenience. $regex etc always return a negative value when an error occurs.

-14 is supposed to mean an internal pcre error, but this is only the case if $regerrstr is not set, then. You can find more info about on the regex page

Synopsis

$regerrstr

Parameters

None

Properties

None

List of error

• 1: \ at end of pattern
• 2: \c at end of pattern
• 3: unrecognized character follows \
• 4: numbers out of order in {} quantifier
• 5: number too big in {} quantifier
• 6: missing terminating ] for character class
• 7: invalid escape sequence in character class
• 8: range out of order in character class
• 9: nothing to repeat
• 10: [this code is not in use]
• 11: internal error: unexpected repeat
• 12: unrecognized character after (? or (?-
• 13: POSIX named classes are supported only within a class
• 14: missing )
• 15: reference to non-existent subpattern
• 16: erroffset passed as NULL
• 17: unknown option bit(s) set
• 18: missing ) after comment
• 19: [this code is not in use]
• 20: regular expression is too large
• 21: failed to get memory
• 22: unmatched parentheses
• 23: internal error: code overflow
• 24: unrecognized character after (?<
• 25: lookbehind assertion is not fixed length
• 26: malformed number or name after (?(
• 27: conditional group contains more than two branches
• 28: assertion expected after (?(
• 29: (?R or (?[+-]digits must be followed by )
• 30: unknown POSIX class name
• 31: POSIX collating elements are not supported
• 32: this version of PCRE is compiled without UTF support
• 33: [this code is not in use]
• 34: character value in \x{} or \o{} is too large
• 35: invalid condition (?(0)
• 36: \C not allowed in lookbehind assertion
• 37: PCRE does not support \L, \l, \N{name}, \U, or \u
• 38: number after (?C is > 255
• 39: closing ) for (?C expected
• 40: recursive call could loop indefinitely
• 41: unrecognized character after (?P
• 42: syntax error in subpattern name (missing terminator)
• 43: two named subpatterns have the same name
• 44: invalid UTF-8 string (specifically UTF-8)
• 45: support for \P, \p, and \X has not been compiled
• 46: malformed \P or \p sequence
• 47: unknown property name after \P or \p
• 48: subpattern name is too long (maximum 32 characters)
• 49: too many named subpatterns (maximum 10000)
• 50: [this code is not in use]
• 51: octal value is greater than \377 in 8-bit non-UTF-8 mode
• 52: internal error: overran compiling workspace
• 53: internal error: previously-checked referenced subpattern not found
• 54: DEFINE group contains more than one branch
• 55: repeating a DEFINE group is not allowed
• 56: inconsistent NEWLINE options
• 57: \g is not followed by a braced, angle-bracketed, or quoted name/number or by a plain number
• 58: a numbered reference must not be zero
• 59: an argument is not allowed for (*ACCEPT), (*FAIL), or (*COMMIT)
• 60: (*VERB) not recognized or malformed
• 61: number is too big
• 62: subpattern name expected
• 63: digit expected after (?+
• 64: ] is an invalid data character in JavaScript compatibility mode
• 65: different names for subpatterns of the same number are not allowed
• 66: (*MARK) must have an argument
• 67: this version of PCRE is not compiled with Unicode property support
• 68: \c must be followed by an ASCII character
• 69: \k is not followed by a braced, angle-bracketed, or quoted name
• 70: internal error: unknown opcode in find_fixedlength()
• 71: \N is not supported in a class
• 72: too many forward references
• 73: disallowed Unicode code point (>= 0xd800 && <= 0xdfff)
• 74: invalid UTF-16 string (specifically UTF-16)
• 75: name is too long in (*MARK), (*PRUNE), (*SKIP), or (*THEN)
• 76: character value in \u.... sequence is too large
• 77: invalid UTF-32 string (specifically UTF-32)
• 78: setting UTF is disabled by the application
• 79: non-hex character in \x{} (closing brace missing?)
• 80: non-octal character in \o{} (closing brace missing?)
• 81: missing opening brace after \o
• 82: parentheses are too deeply nested
• 83: invalid range in character class
• 84: group name must start with a non-digit
• 85: parentheses are too deeply nested (stack check)

Example

//echo -a $regex($str(a,2700),/(?<=a*)/) $regerrstr

Compatibility

Added: mIRC v5.9
Added on: 26 Apr 2001
Note: Unless otherwise stated, this was the date of original functionality.
Further enhancements may have been made in later versions.

See Also

$regex