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<?php |
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/** |
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* Copyright (c) 2016-present Ganbaro Digital Ltd |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* * Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* * Neither the names of the copyright holders nor the names of his |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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* @category Libraries |
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* @package MissingBits/TypeChecks |
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* @author Stuart Herbert <[email protected]> |
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* @copyright 2016-present Ganbaro Digital Ltd www.ganbarodigital.com |
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License |
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* @link http://ganbarodigital.github.io/php-the-missing-bits |
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*/ |
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namespace GanbaroDigital\MissingBits\TypeChecks; |
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use GanbaroDigital\MissingBits\Checks\Check; |
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use GanbaroDigital\MissingBits\Checks\ListCheck; |
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use GanbaroDigital\MissingBits\Checks\ListableCheck; |
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/** |
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* is $item something that PHP will accept as a string? |
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*/ |
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class IsStringy implements Check, ListCheck |
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{ |
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// saves us having to implement inspectList() ourselves |
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use ListableCheck; |
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/** |
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* is $item something that PHP will accept as a string? |
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* |
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* @param mixed $item |
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* the variable to examine |
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* @return boolean |
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* TRUE if PHP will happily use $item as a string |
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* FALSE otherwise |
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*/ |
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public static function check($item) |
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{ |
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// PHP will auto-convert these to strings without generating |
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// any errors |
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if (is_string($item) || is_int($item) || is_double($item)) { |
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return true; |
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} |
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// depends if the object has the __toString() method or not |
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if (is_object($item)) { |
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return method_exists($item, '__toString'); |
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} |
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// there's no point turning these into strings |
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// |
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// NULL |
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// array |
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// boolean |
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// callable |
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// resource |
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return false; |
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} |
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/** |
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* is $item something that PHP will accept as a string? |
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* |
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* @param mixed $item |
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* the variable to examine |
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* @return boolean |
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* TRUE if PHP will happily use $item as a string |
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* FALSE otherwise |
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*/ |
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public function inspect($item) |
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{ |
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return static::check($item); |
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} |
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/** |
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* are all items in $list something that PHP will accept as a string? |
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* |
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* @param mixed $list |
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* the variable to examine |
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* @return boolean |
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* TRUE if PHP will happily use all the items in $list as a string |
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* FALSE otherwise |
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*/ |
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public static function checkList($list) |
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{ |
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$check = new static(); |
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return $check->inspectList($list); |
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} |
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} |
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ganbarodigital /
php-the-missing-bits
