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run code in 300+ PHP versions simultaneously
<?php $delim = ','; $enclosure = '"'; $escape = '~'; $data = ['', '"', 'foo"', '\\"', '\\', 'foo\\']; $input = fopen('php://temp,', 'w+'); fputcsv($input, $data, $delim, $enclosure, $escape); rewind($input); $csv = stream_get_contents($input); var_dump($csv); $output = fopen('php://temp', 'r+'); fwrite($output, $csv); rewind($output); var_dump($parsed = fgetcsv($output, 0, $delim, $enclosure, $escape), $data === $parsed);
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
string(27) ","""","foo""","\""",\,foo\ " array(6) { [0]=> string(0) "" [1]=> string(1) """ [2]=> string(4) "foo"" [3]=> string(2) "\"" [4]=> string(1) "\" [5]=> string(4) "foo\" } bool(true)

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144.52 ms | 403 KiB | 203 Q