WordPress电话号码限制为允许xxx xxx xxxx格式

我将占位符保留为xxx xxx xxxx

<label> Phone Number </label> [number* shm-mrk-phone minlength:10 maxlength:140 placeholder "]

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它不允许xxx xxx xxxx（这应该允许），它允许XXXXXXXXX这很简单。我用

tel

代替号码类型来添加手机号码

在Contact Form 7 plugin formatting.php模块中

我用更新了wpcf7\u is\u tel函数的代码

function wpcf7_is_tel( $tel ) {
    $result = preg_match( '/^(?:\(\d{3}\)|\d{3}-)\d{3}-\d{4}$/', $tel );
    return apply_filters( 'wpcf7_is_tel', $result, $tel );
}

很好

function wpcf7_is_tel( $tel ) {
    $result = preg_match( '/^(?:\(\d{3}\)|\d{3}-)\d{3}-\d{4}$/', $tel );
    return apply_filters( 'wpcf7_is_tel', $result, $tel );
}