JavaScript & PHP模仿C#中string.format效果-优快云博客

本文详细介绍了JavaScript和PHP中实现字符串格式化的具体方法，包括使用正则表达式进行参数替换的过程，以及如何处理转义字符。通过具体示例展示了不同参数下字符串的动态填充效果。

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1、JavaScript

function stringformat() {
    var args = Array.prototype.slice.call(arguments);
    if (args.length == 0) { return '';}     
    if (args.length == 1) { return args[0]; }     
    var str = args.shift();
    return str.replace(
                /\\?\{([^{}]+)\}/g,
                function(match, name) {
                    if (match.charAt(0) === '\\') {
                        return match.slice(1);
                    }
                    return (args[name] === undefined) ? match : args[name];
                }
            );
}

// 返回 my name is Rain Man and age is 28
stringformat('my name is {0} and age is {1}', 'Rain Man', 28, 'an');

2、PHP

function string_format() {       
    $args = func_get_args();     
    if (count($args) == 0) { return '';}     
    if (count($args) == 1) { return $args[0]; }     
    $str = array_shift($args);
    $GLOBALS['OBJ'] = $args;
    $str = preg_replace_callback(
            '/\\\?{([^{}]+)}/', 
            function ($matches) {
                list($matche, $name) = $matches;
                if ($matche[0] === '\\') {
                    return substr($matche, 1);
                }
                $obj = $GLOBALS['OBJ'];
                return isset($obj[$name]) ? $obj[$name] : $matche;
            },
            $str
     ); 
    $GLOBALS['OBJ'] = NULL;
    return $str;
}

// my name is Rain Man and age is 28
echo string_format('my name is {0} and age is {1}', 'Rain Man', 28, 'an');

转载于:https://www.cnblogs.com/rainman/p/4498776.html