验证示例在 php 中,但正则表达式是标准的
/*pass the date you wanna validate as parameter to the function.
The function returns true if it is valid and false if the date passed is not valid
*/
function DateValid($date){
//format will be fr if the date is in french format and en if the date is in en format
$format='';
//regex that tests if the date is in french format or english, if not in one of these two then it is not valid
if(preg_match("#^(\d{1,2})[\-./ ](\d{1,2})[\-./ ](\d{4})(?: (\d{1,2})(?:[ .-](\d{1,2})){1,2})?$#",$date,$m)){
$format='fr';
}elseif (preg_match('#^(\d{4})[-. ](\d{1,2})[-. ](\d{1,2})(?: (\d{1,2})(?:[ .-](\d{1,2})){1,2})?$#', $date, $m)) {
$format='en';
}else{
echo '<p style="font-size:150px">not english nor french</p>';
return false;
}
//If it is french format or English then check if the date is correct
if($format=='fr'){
if (checkdate($m[2], $m[1], $m[3]) == false || $m[4] >= 24 || $m[5] >= 60 || $m[6] >= 60) {
echo '<p style="font-size:150px">Not valid french</p>';
return false;
}else{
echo '<p style="font-size:150px">Valid french</p>';
return true;
}
}elseif($format=='en'){
if (checkdate($m[2], $m[3], $m[1]) == false || $m[4] >= 24 || $m[5] >= 60 || $m[6] >= 60) {
echo '<p style="font-size:150px">Not valid english</p>';
return false;
}else{
echo '<p style="font-size:150px">Valid english</p>';
return true;
}
}
}