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<?php $strings = [ 'he said "hello worLd"', 'he sAId "καλημέρα ΚΌΣΜΕ" to me', "Ryan's shirts are verY large", ]; var_export( preg_replace_callback('/[^"]+/', fn($m) => mb_convert_case($m[0], MB_CASE_TITLE, "UTF-8"), $strings) );
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
array ( 0 => 'He Said "Hello World"', 1 => 'He Said "Καλημέρα Κόσμε" To Me', 2 => 'Ryan\'s Shirts Are Very Large', )
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
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123.34 ms | 407 KiB | 5 Q