PHP strtr() Function: Usage, Parameters, and Examples
This article explains the PHP strtr() function, detailing its two signatures for character and substring replacement, describing parameter behavior, return values, and special cases, and provides multiple code examples that illustrate how to apply the function in real-world scenarios.
The article introduces the PHP strtr() function, which replaces characters or substrings in a string based on provided mappings.
Two signatures are described: strtr(string $str, string $from, string $to) for character-by-character translation, and strtr(string $str, array $replace_pairs) for associative array replacements.
It explains how the function works, the handling of unequal lengths, return values, and the special case where an empty string key causes FALSE to be returned.
Several practical examples demonstrate character translation, array-based replacements, and combined usage, showing the resulting output for each case.
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