Regex is not working for some cases - PHP

问题

I have a number of string patterns from which I filter out my data and insert it into a database. Now, I have to handle strings that my old regex is not able to match correctly.

This is my regex:

$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.]+))/";

My complete code:

$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";
}

The string patterns which are not working for me:

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

Online screenshot for demonstration:

回答1:

Here is the regex that will match all of the cases:

(?: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.]+))?

See demo

A shortened version to be used with i option and with unified digit matching:

(?: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

回答2:

^(?: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.]+))?$

                                                                                                     ^^    ^^     ^^                                                      ^^

Try this.See demo.

https://regex101.com/r/uE3cC4/1

Also use anchors to make sure you dont make partial matches.

来源：https://stackoverflow.com/questions/29960796/regex-is-not-working-for-some-cases-php

标签

php

regex

preg-match