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run code in 300+ PHP versions simultaneously
<?php $re = '/(?:"\K([^_\r\n]+)|\G(?!^))(?=[^":\r\n]*")(?=[^:\r\n]*:)_?([a-zA-Z])([^"_\r\n]*)/'; $str = '"aa_bb" : "foo" "pp_Qq" : "bar" "Xx_yY_zz" : "foobar" "Xx_yYyyyyyYyY_zz_a" : "foobar"'; $result = preg_replace_callback($re, function($matches) { return strtolower($matches[1]) . strtoupper($matches[2]) . strtolower($matches[3]); }, $str); echo $result;
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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1
"aaBb" : "foo" "ppQq" : "bar" "xxYyZz" : "foobar" "xxYyyyyyyyyyZzA" : "foobar"
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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