php - 正则表达式在某些情况下不起作用 - PHP

Question

我有许多字符串模式，我从中过滤出数据并将其插入数据库。现在，我必须处理旧正则表达式无法正确匹配的字符串。

这是我的正则表达式:

$re = "/(?:Expiration Fee: )?(\d+)\s+((?:[a-zA-Z0-9\/]+\s+)*)(?:\(([a-zA-Z]+)\)\s+)?(?:>([0-9.]+)\s+)?(?:(\d+-\d+)\s+)?(?:\((\d{1,2}(?::\d{2})?[AP]M)\)\s+)?(?:@\s+([\d.]+))/";

我的完整代码:

$re = "/(?:Expiration Fee: )?(\d+)\s+((?:[a-zA-Z0-9\/]+\s+)*)(?:\(([a-zA-Z]+)\)\s+)?(?:>([0-9.]+)\s+)?(?:(\d+-\d+)\s+)?(?:\((\d{1,2}(?::\d{2})?[AP]M)\)\s+)?(?:@\s+([\d.]+))/";

        $strs = array("Expiration Fee: 10 LONG AUD/USD >.8189 (9:50AM) @ 90.5","10 Wall St 30 (Mar) >17900 (4:15PM) @ 69.5","2 AUD/USD >.8114 (11:35AM) @ 97.5","Expiration Fee: 1 SHORT AUD/USD >.8114 (11:35AM) @ 87","2 Wall St 30 (Mar) 18000-18100 (12PM) @ 18023","2 LONG US Tech 100 (Mar) >4284 (1:15PM) @ 56.5","1 EUR/USD >1.2180 (3PM) @ 41.5","Expiration Fee: 1 SHORT AUD/USD >.8114 (11:35AM) @ 87","Expiration Fee: 1 LONG GBP/USD >1.5090 (8:55PM) @ 95.5","Expiration Fee: 2 SHORT US 500 (Mar) >2037.7 (10AM) @ 5.5","Expiration Fee: 1 SHORT EUR/USD >1.1582 (2:20PM) @ 11.5","6 SHORT GBP/USD >1.5200 (3:10PM) @ 22.3333","Expiration Fee: 1 SHORT GBP/USD >1.5085 (8PM) @ 17.5","Expiration Fee: 1 SHORT EUR/GBP >.7340 (3PM) @ 33.25","2 Wall St 30 (Mar) 18000-18100 (12PM) @ 18023","Expiration Fee: 5 LONG US Tech 100 (Mar) 4190-4390 (4:15PM) @ 4291","2 LONG Wall St 30 (Mar) >18000 (1:15PM) @ 53.5","1 AUD/USD .7570-.7670 (2PM) @ 0.7626","1 US 500 (Jun) 2075.0-2085.0","1 US 500 (Jun) 2075.0-2085.0 (1PM) @ 2079","1 US 500 (Jun) 2075.0-2085.0 (1PM) @ 2079","
1 AUD/USD .7570-.7670 (2PM) @ 0.7626","2 AUD/USD .8020-.8220 (11PM) @ 0.8118");
foreach ($strs as $subject) {
    echo "======<br />\n$subject<br />\n";
    if (preg_match($re, $subject, $m))
        for ($i=1; $i<count($m); $i++)
            if ($m[$i]) echo "$m[$i]<br />\n";
}

不适合我的字符串模式:

1 AUD/USD .7570-.7670 (2PM) @ 0.7626

1 US 500 (Jun) 2075.0-2085.0

1 US 500 (Jun) 2075.0-2085.0 (1PM) @ 2079

1 AUD/USD .7570-.7670 (2PM) @ 0.7626

2 AUD/USD .8020-.8220 (11PM) @ 0.8118

在线演示截图:

Answer 1

这是匹配所有情况的正则表达式:

(?:Expiration Fee: )?(\d+)\s+((?:[a-zA-Z\d\/]+\s+)*)(?:\(([a-zA-Z]+)\)\s+)?(?:>([0-9.]+)\s+)?(?:([\d.]+-[\d.]+)\s*)?(?:\((\d{1,2}(?::\d{2})?[AP]M)\)\s+)?(?:@\s+([\d.]+))?

参见 demo

与 i 选项和统一数字匹配一起使用的缩短版本:

(?:Expiration Fee: )?(\d+)\s+((?:[a-z\d\/]+\s+)*)(?:\(([a-z]+)\)\s+)?(?:>([\d.]+)\s+)?(?:([\d.]+-[\d.]+)\s*)?(?:\((\d{1,2}(?::\d{2})?[AP]M)\)\s+)?(?:@\s+([\d.]+))?

Demo 2