QGIS/resources/function_help/json/replace

{
  "name": "replace",
  "type": "function",
  "groups": ["String"],
  "description": "Returns a string with the supplied string, array, or map of strings replaced.",
  "variants": [{
    "variant": "String & array variant",
    "variant_description": "Returns a string with the supplied string or array of strings replaced by a string or an array of strings.",
    "arguments": [{
      "arg": "string",
      "description": "the input string"
    }, {
      "arg": "before",
      "description": "the string or array of strings to replace"
    }, {
      "arg": "after",
      "description": "the string or array of strings to use as a replacement"
    }],
    "examples": [{
      "expression": "replace('QGIS SHOULD ROCK','SHOULD','DOES')",
      "returns": "'QGIS DOES ROCK'"
    }, {
      "expression": "replace('QGIS ABC',array('A','B','C'),array('X','Y','Z'))",
      "returns": "'QGIS XYZ'"
    }, {
      "expression": "replace('QGIS',array('Q','S'),'')",
      "returns": "'GI'"
    }]
  }, {
    "variant": "Map variant",
    "variant_description": "Returns a string with the supplied map keys replaced by paired values. Longer map keys are evaluated first.",
    "arguments": [{
      "arg": "string",
      "description": "the input string"
    }, {
      "arg": "map",
      "description": "the map containing keys and values"
    }],
    "examples": [{
      "expression": "replace('APP SHOULD ROCK',map('APP','QGIS','SHOULD','DOES'))",
      "returns": "'QGIS DOES ROCK'"
    }, {
      "expression": "replace('forty two',map('for','4','two','2','forty two','42'))",
      "returns": "'42'"
    }]
  }],
  "tags": ["array", "map", "strings", "supplied", "replaced"]
}