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run code in 150+ php & hhvm versions
Bugs & Features
<?php $selfTable = 'songs'; $tables = array( 'types' => 'layout_template_types' ); $string = '$content AS content, CONCAT_WS( ".", $types.alias, layout_templates.custom_item_id ), id'; $string = preg_replace_callback('#\$([\w]+)\.([\w]+)#', function($match) use ($tables) { return '`' . $tables[$match[1]] . '`.`' . $match[2] . '`'; }, $string); $string = preg_replace_callback('#\$([\w]+)#', function($match) use ($selfTable) { return '`' . $selfTable . '`.`' . $match[1] . '`'; }, $string); $string = preg_replace('#([\w]+)\.([\w]+)#', '`\1`.`\2`', $string); echo $string;
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
`songs`.`content` AS content, CONCAT_WS( ".", `layout_template_types`.`alias`, `layout_templates`.`custom_item_id` ), id
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/13Pjv on line 16
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/13Pjv on line 16
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/13Pjv on line 16
Process exited with code 255.