php check valid phone number

/** * form Check function library *//** * Determine if the email format is correct * @param $email */function is_email ($email) { return strlen ($email) > 6 &&A mp Preg_match ("/^[\w\-\.") [Email protected] [\w\-\.] + (\.\w+) +$/", $email);}

Php user name, password, phone number, legal judgment code article has three common functions: Determine whether the user name is valid and whether the user password is valid, determine whether the phone number is valid. these three functions are

Seven habits of writing a secure PHP application Improve the security of your WEB application Security in PHP applications includes remote security and local security. This article will reveal the habits that PHP developers should develop when

PHP regular expression processing function summary analysis, read the PHP regular expression processing function summary analysis, The following summarizes common function code in php, so that you can learn php regular expression preg_grep (PHP4,

Php regular expression processing function summary analysis. Preg_grep (PHP4, PHP5) preg_grep -- returns the array unit that matches the pattern. description: arraypreg_grep (stringpattern, arrayinput [, intflags]) preg_grep () returns an array,

I. Overview of the SESSION What session is, at first I also do not understand, non-professional dictionary translation for the Conference, the Conference period. Make a less appropriate metaphor. (although inappropriate, but the meaning is the same),

1. What is the definition of a variable? How do I check that a variable is defined? How do I delete a variable? How do I detect if a variable is set? $ defines whether the isset ()//check variable is setDefined ()//Detect constants are setUnset

I. Overview of the SESSION What session is, at first I also do not understand, non-professional dictionary translation for the Conference, the Conference period. Make a less appropriate metaphor. (although inappropriate, but the meaning is the same),

I. Overview of the SESSIONWhat is the session, just at the beginning I do not understand, the non-professional dictionary translation for the meeting, the meeting period. Make an inappropriate analogy.(although not appropriate, but the meaning is

The following describes common function codes in php to help you learn php regular expressions preg_grep. (PHP 4, PHP 5) Preg_grep -- returns the array unit that matches the pattern. Description Array preg_grep (string pattern, array input [, int