PHP code example of di / expression-parser

1. Go to this page and download the library: Download di/expression-parser library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

di / expression-parser example snippets


use DI\ExpressionParser\Expression;

$expression = 'or_x(equal([attr1], 1), in_array(explode([keywords]), "hello"))';

$mappings = [
    'attr1' => 1,
    'keywords' => 'hello,world',
];

$ex = new Expression($expression, $mappings);

echo $ex->value(); // true


new Expression(
    'in_array([keywords], "hello")',
    [
        'keywords' => [
            'hello',
            'world',
        ],
    ]
)


new Expression(
    'in_array(explode([keywords]), "hello")',
    [
        'keywords' => 'hello,world',
    ]
)


new Expression(
    'explode([Rooms], ";")',
    [
        'Rooms' => 'Pantry;Study',
    ]
)


new Expression(
    'or_x(equal([attr1], 1), in_array(explode([attr2]), "hello"))',
    [
        'attr1' => 1,
        'attr2' => 'hello,world',
    ]
)


new Expression(
    'not(or_x(equal([attr1], 1), in_array(explode([attr2]), "word")))',
    [
        'attr1' => 2,
        'attr2' => 'hello,world',
    ]
)


new Expression(
    'first(take(sort(filter([attr1], [filter_func]), [dir]), [offset]))',
    [
        'attr1' => [
            10,
            30,
            20,
        ],
        'filter_func' => function (ExpressionParser $context, $value) {
            return array_filter($value, function ($item) use ($context) {
                return $item < $context->getMappings('filter_attr');
            });
        },
        'filter_attr' => 30,
        'dir' => 'desc',
        'offset' => 1,
    ]
)