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    FFI::new

    (PHP 7 >= 7.4.0, PHP 8)

    FFI::new — Creates a C data structure

    説明

    public FFI::new(FFI\CType|string $type, bool $owned = true, bool $persistent = false): ?FFI\CData

    Creates a native data structure of the given C type. Any type declared for the instance is allowed.

    パラメータ

    type

    type is a valid C declaration as string, or an instance of FFI\CType which has already been created.

    owned

    Whether to create owned (i.e. managed) or unmanaged data. Managed data lives together with the returned FFI\CData object, and is released when the last reference to that object is released by regular PHP reference counting or GC. Unmanaged data should be released by calling FFI::free(), when no longer needed.

    persistent

    Whether to allocate the C data structure permanently on the system heap (using malloc()), or on the PHP request heap (using emalloc()).

    戻り値

    Returns the freshly created FFI\CData object, or null on failure.

    変更履歴

    バージョン 説明
    8.3.0 Calling FFI::new() statically is now deprecated.

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    User Contributed Notes 1 note

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    baminazad at cs dot stonybrook dot edu
    5 years ago
    Let's assume we have a C struct:
    typedef struct _Z3_ast *Z3_ast;

    and we want to create an array:
    Z3_ast args[2];

    and assign values:
    args[1] = x;
    args[1] = y;

    The PHP FFI equivalent would be:
    <?php
    $ffi     = FFI::cdef(...
    // Create Z3_ast[2] type
    $arg_type = FFI::arrayType($ffi->type('Z3_ast'), [2]);
    // Create array of type Z3_ast[2]
    $args = FFI::new($arg_type);
    // Populate the array
    $args[0] = $x;
    $args[1] = $y;
    ?>
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