3v4l.org

run code in 300+ PHP versions simultaneously
<?php function uncamel($content, $separator = '_') { $content = preg_replace('#(?<=[a-zA-Z])([A-Z])(?=[a-zA-Z])#e', "'$separator' . strtolower('$1')", $content); var_dump($content); $content{0} = strtolower($content{0}); return $content; } var_dump(uncamel('rfqInternalRefNo'));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Array and string offset access syntax with curly braces is no longer supported in /in/1CFbm on line 7
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Array and string offset access syntax with curly braces is no longer supported in /in/1CFbm on line 7
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/1CFbm on line 7 Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/1CFbm on line 7 Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /in/1CFbm on line 5 NULL Notice: Trying to access array offset on value of type null in /in/1CFbm on line 7 array(1) { [0]=> string(0) "" }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33
Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /in/1CFbm on line 5 NULL array(1) { [0]=> string(0) "" }
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /in/1CFbm on line 5 string(19) "rfq_internal_ref_no" string(19) "rfq_internal_ref_no"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45
string(19) "rfq_internal_ref_no" string(19) "rfq_internal_ref_no"
preferences:
216.61 ms | 402 KiB | 356 Q