3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function _display_header_text() { if ( !empty ( display_header_text() ) ) : ?> <style type="text/css" id="_display_header_text"> .mainHeader a img { display:none; } </style> <?php endif; } add_action('wp_head','_display_header_text'); ?> <?php function _is_admin_bar_showing() { if( is_admin_bar_showing() ):?> <style type="text/css" id="_is_admin_bar_showing"> .fixedHeader { top:32px; } </style> <?php endif; } add_action('wp_head','_is_admin_bar_showing');
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Call to undefined function add_action() in /in/XrWMf:11 Stack trace: #0 {main} thrown in /in/XrWMf on line 11
Process exited with code 255.
Output for hhvm-3.12.0
Fatal error: Uncaught Error: Call to undefined function add_action() in /in/XrWMf:11 Stack trace: #0 {main}
Process exited with code 255.
Output for 5.5.0 - 5.6.28, hhvm-3.10.0
Fatal error: Call to undefined function add_action() in /in/XrWMf on line 11
Process exited with code 255.
Output for 5.0.0 - 5.4.45
Fatal error: Can't use function return value in write context in /in/XrWMf on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_VARIABLE or '$' in /in/XrWMf on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_VARIABLE or '$' in /in/XrWMf on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/XrWMf on line 4
Process exited with code 255.