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George Peter Banyard
d8696f9216
* Add behavioural tests for incdec operators * Add support to ++/-- for objects castable to _IS_NUMBER * Add str_increment() function * Add str_decrement() function RFC: https://wiki.php.net/rfc/saner-inc-dec-operators Co-authored-by: Ilija Tovilo <ilija.tovilo@me.com> Co-authored-by: Arnaud Le Blanc <arnaud.lb@gmail.com>
60 lines
1.2 KiB
PHP
60 lines
1.2 KiB
PHP
--TEST--
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Verifying that the str_increment() polyfill behaves the same
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--FILE--
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<?php
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function polyfill(string $s): string {
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if (is_numeric($s)) {
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$offset = stripos($s, 'e');
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if ($offset !== false) {
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/* Using increment operator would cast the string to float
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* Therefore we manually increment it to convert it to an "f"/"F" that doesn't get affected */
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$c = $s[$offset];
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$c++;
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$s[$offset] = $c;
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$s++;
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$s[$offset] = match ($s[$offset]) {
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'f' => 'e',
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'F' => 'E',
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'g' => 'f',
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'G' => 'F',
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};
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return $s;
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}
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}
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return ++$s;
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}
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$strictlyAlphaNumeric = [
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"Az",
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"aZ",
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"A9",
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"a9",
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// Carrying values until the beginning of the string
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"Zz",
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"zZ",
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"9z",
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"9Z",
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// string interpretable as a number in scientific notation
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"5e6",
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"5E6",
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"5e9",
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"5E9",
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// Interned strings
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"d",
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"D",
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"4",
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];
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foreach ($strictlyAlphaNumeric as $s) {
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if (str_increment($s) !== polyfill($s)) {
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var_dump("Error:", str_increment($s), polyfill($s));
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}
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}
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echo "DONE";
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?>
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--EXPECT--
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DONE
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