HTMLIntField.php
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HTMLIntField.php
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	<?php

	namespace MediaWiki\HTMLForm\Field;

	/**
	* A field that must contain a number
	*
	* @stable to extend
	*/
	class HTMLIntField extends HTMLFloatField {

	/**
	* @inheritDoc
	* @stable to override
	*/
	public function validate( $value, $alldata ) {
	$p = parent::validate( $value, $alldata );

	if ( $p !== true ) {
	return $p;
	}

	# https://www.w3.org/TR/html5/infrastructure.html#signed-integers
	# with the addition that a leading '+' sign is ok. Note that leading zeros
	# are fine, and will be left in the input, which is useful for things like
	# phone numbers when you know that they are integers (the HTML5 type=tel
	# input does not require its value to be numeric). If you want a tidier
	# value to, eg, save in the DB, clean it up with intval().
	if ( !preg_match( '/^((\+\|\-)?\d+)?$/', trim( $value ?? '' ) ) ) {
	return $this->msg( 'htmlform-int-invalid' );
	}

	return true;
	}
	}

	/** @deprecated class alias since 1.42 */
	class_alias( HTMLIntField::class, 'HTMLIntField' );