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How to get all regex attributes?

I made this regex to get all the attributes in the "img" tag.

 /<img\s+(?:([a-z_-]+)\s*=\s*"(.*?)"\s*)*\s*\/>/g

But it just takes only one attribute, which is the last.

How can I get all regex attributes?

Test string:

 <img src="abc.png" alt="abc" />
 <img alt="def" src="def.png" />
 <img src="abc.png" alt="abc" style="border:none" />
 <img alt="def" src="def.png" style="border:none" />

Result: ( http://www.regex101.com )

 MATCH 1
 1. [19-22] `alt`
 2. [24-27] `abc`

 MATCH 2
 1. [47-50] `src`
 2. [52-59] `def.png`

 MATCH 3
 1. [93-98] `style`
 2. [100-111]   `border:none`

 MATCH 4
 1. [145-150]   `style`
 2. [152-163]   `border:none`
+4
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2 answers

I suggest you use binding \Gto do continuous string matching.

(?:<img|(?<!^)\G)\h*([\w-]+)="([^"]*)"(?=.*?\/>)

Get the attribute from the index of group 1 and get the value from the index of group 2.

Demo

$string = <<<EOT
 <img src="abc.png" alt="abc" />
 <img alt="def" src="def.png" />
 <img src="abc.png" alt="abc" style="border:none" />
 <img alt="def" src="def.png" style="border:none" />
EOT;
preg_match_all('~(?:<img|(?<!^)\G)\h*(\w+)="([^"]+)"(?=.*?\/>)~', $string, $match);
print_r($match[1]);
print_r($match[2]);

Conclusion:

Array
(
    [0] => src
    [1] => alt
    [2] => alt
    [3] => src
    [4] => src
    [5] => alt
    [6] => style
    [7] => alt
    [8] => src
    [9] => style
)
Array
(
    [0] => abc.png
    [1] => abc
    [2] => def
    [3] => def.png
    [4] => abc.png
    [5] => abc
    [6] => border:none
    [7] => def
    [8] => def.png
    [9] => border:none
)
+7
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Try the following:

/(\w+)=["']([a-zA-Z0-9_.:'"]+)["']/

, php g , preg_match_all()

: https://regex101.com/r/cQ8jT2/1

+2

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