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# override_function

(PECL)

override_function -- Overrides built-in functions

## Beschreibung

bool override_function ( string function_name, string function_args, string function_code )

Overrides built-in functions by replacing them in the symbol table.

## Parameter Liste

`function_name`

  The function to override.

`function_args`

  The function arguments, as a coma separated string.

  Usually you will want to pass this parameter, as well as the `function_code` parameter, as a single quote delimited string. The reason for using single quoted strings, is to protect the variable names from parsing, otherwise, if you use double quotes there will be a need to escape the variable names, e.g. \`$your_var`.

`function_code`

  The new code for the function.

## Rückgabewerte

Gibt bei Erfolg `TRUE` zurück, im Fehlerfall `FALSE`.

## Beispiele

Beispiel 1. override_function() example
`<?php override_function('test', '$a,$b', 'echo "DOING TEST"; return $a * $b;'); ?>`

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