Created
September 8, 2012 08:28
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Simple function to minimize inline js
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<?php | |
$code = 'js code'; | |
$replace = array( | |
'#\'([^\n\']*?)/\*([^\n\']*)\'#' => "'\1/'+\'\'+'*\2'", // remove comments from ' strings | |
'#\"([^\n\"]*?)/\*([^\n\"]*)\"#' => '"\1/"+\'\'+"*\2"', // remove comments from " strings | |
'#/\*.*?\*/#s' => "", // strip C style comments | |
'#[\r\n]+#' => "\n", // remove blank lines and \r's | |
'#\n([ \t]*//.*?\n)*#s' => "\n", // strip line comments (whole line only) | |
'#([^\\])//([^\'"\n]*)\n#s' => "\\1\n", | |
// strip line comments | |
// (that aren't possibly in strings or regex's) | |
'#\n\s+#' => "\n", // strip excess whitespace | |
'#\s+\n#' => "\n", // strip excess whitespace | |
'#(//[^\n]*\n)#s' => "\\1\n", // extra line feed after any comments left | |
// (important given later replacements) | |
'#/([\'"])\+\'\'\+([\'"])\*#' => "/*" // restore comments in strings | |
); | |
$search = array_keys( $replace ); | |
$script = preg_replace( $search, $replace, $code ); | |
$replace = array( | |
"&&\n" => "&&", | |
"||\n" => "||", | |
"(\n" => "(", | |
")\n" => ")", | |
"[\n" => "[", | |
"]\n" => "]", | |
"+\n" => "+", | |
",\n" => ",", | |
"?\n" => "?", | |
":\n" => ":", | |
";\n" => ";", | |
"{\n" => "{", | |
// "}\n" => "}", (because I forget to put semicolons after function assignments) | |
"\n]" => "]", | |
"\n)" => ")", | |
"\n}" => "}", | |
"\n\n" => "\n" | |
); | |
$search = array_keys( $replace ); | |
$script = str_replace( $search, $replace, $script ); | |
$code = trim( $script ); | |
?> |
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