Replaces bits of a string using patternmatching.

Related Syntax Constructs

The following construct(s) refer to this construct:

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Syntax

fn:replace(string $input, string $pattern, string $replacement) => string

fn:matches(string $input, string $pattern, string $replacement, string $flags) => string

Description

The function returns the input string wherein all occurrences of $pattern are replaced by $replacement influenced by the value of $flags, if present.

Argument

$input	a string to be modified
$pattern	a pattern
$replacement	a string to be inserted
$flags	modifiers for patternmatching

Example

• For each string replace "x" with "y".

  for $value in ("axa","bxb","cxc")
  return replace($value,"x","y")

  The query returns:

  <xq:result>
    <xq:value>aya</xq:value>
    <xq:value>byb</xq:value>
    <xq:value>cyc</xq:value>
  </xq:result>