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How can I find a 3 character text pattern in a string of: an upper or lowercase alphabetic character (a to z or A to Z) followed by a numeric character (0 to 9) followed by an upper or lowercase alphabetic character (a to z or A to Z)

for example x4A or A3j or A7X or h1k

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  • I looked and those pattern matches did not fit my requirement. I also know I could loop through testing but that is pretty inefficient Commented Jun 16, 2012 at 11:42

4 Answers 4

Reset to default
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I think you should use

/[a-zA-Z][0-9][a-zA-Z]/
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$matches = array();
preg_match('/[a-z]\d[a-z]/i', $my_string, $matches);
// now $matches contains all you want
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read docs on preg_match()
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try :

[a-zA-Z]{1}[0-9][a-zA-Z]{1}

demo : http://regexr.com?3199m

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I tested this and iax87e5 returned true when it should be false
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Try this:

preg_match_all('/[A-Za-z]{1}[0-9]{1}[A-Za-z]{1}/',$string,$matches);

$matches now contains all your matches.

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I tested this and iax87e5 returned true when it should be false

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