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15 years ago
Might be worth mentioning that a SIMPLE way to accomplish Example 2 (potential gotchas) is to simply start your "replacements" in reverse.



So instead of starting from "A" and ending with "E":



<?php

$search  = array('A', 'B', 'C', 'D', 'E');

$replace = array('B', 'C', 'D', 'E', 'F');

// replaces A to B, B to C, C to D, D to E, E to F (makes them all F)

// start from "E" and end with "A":



$search  = array('E', 'D', 'C', 'B', 'A');

$replace = array('F', 'E', 'D', 'C', 'B');

// replaces E to F, D to E, C to D, B to C, A to B (prevents from

// multiple replacements of already replaced values)

?>



So basically start from the "end" and put the replacements in an order where the "replaced value" won't equal a value that exists later in the "search array".
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