{"id":111577,"date":"2025-06-02T01:24:17","date_gmt":"2025-06-01T20:54:17","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/efficient-data-processing-with-php-generators-3kjc\/"},"modified":"2025-06-02T01:24:17","modified_gmt":"2025-06-01T20:54:17","slug":"efficient-data-processing-with-php-generators-3kjc","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/efficient-data-processing-with-php-generators-3kjc\/","title":{"rendered":"\u067e\u0631\u062f\u0627\u0632\u0634 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u06a9\u0627\u0631\u0622\u0645\u062f \u0628\u0627 \u0698\u0646\u0631\u0627\u062a\u0648\u0631\u0647\u0627\u06cc PHP"},"content":{"rendered":"
\n

PHP \u0645\u062f\u0631\u0646 \u0634\u0627\u0645\u0644 \u0645\u06cc \u0634\u0648\u062f \u0698\u0646\u0631\u0627\u062a\u0648\u0631<\/strong>\u060c \u06a9\u0647 \u0628\u0647 \u0634\u0645\u0627 \u0627\u0645\u06a9\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u0628\u062f\u0648\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062d\u0627\u0641\u0638\u0647 \u0632\u06cc\u0627\u062f \u0628\u0627 \u0645\u062c\u0645\u0648\u0639\u0647 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u0628\u0632\u0631\u06af \u06a9\u0627\u0631 \u06a9\u0646\u06cc\u062f. \u0628\u0647 \u062c\u0627\u06cc \u0633\u0627\u062e\u062a\u0646 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u0639\u0638\u06cc\u0645 \u0648 \u0633\u067e\u0633 \u062d\u0644\u0642\u0647 \u0632\u062f\u0646 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0622\u0646 \u060c \u06cc\u06a9 \u0698\u0646\u0631\u0627\u062a\u0648\u0631 \u0627\u0632 \u0622\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u062f yield<\/code> \u0628\u0631\u0627\u06cc \u0628\u0627\u0632\u06af\u0634\u062a \u06cc\u06a9 \u0645\u0648\u0631\u062f \u0647\u0645\u0632\u0645\u0627\u0646. \u0627\u06cc\u0646 \u0641\u0642\u0637 \u0645\u0642\u062f\u0627\u0631 \u0641\u0639\u0644\u06cc \u0631\u0627 \u062f\u0631 \u062d\u0627\u0641\u0638\u0647 \u0646\u06af\u0647 \u0645\u06cc \u062f\u0627\u0631\u062f.<\/p>\n

\u0645\u062b\u0627\u0644: \u062a\u0648\u0644\u06cc\u062f \u0627\u0639\u062f\u0627\u062f<\/strong><\/p>\n

\n
function<\/span> getNumbersWithGenerator<\/span>(<\/span>int<\/span> $max<\/span>):<\/span> Generator<\/span> {<\/span>\n    for<\/span> (<\/span>$i<\/span> =<\/span> 1<\/span>;<\/span> $i<\/span> <=<\/span> $max<\/span>;<\/span> $i<\/span>++<\/span>)<\/span> {<\/span>\n        yield<\/span> $i<\/span>;<\/span>\n    }<\/span>\n}<\/span>\n\n\/\/ Only one number is in memory at once:<\/span>\nforeach<\/span> (<\/span>getNumbersWithGenerator<\/span>(<\/span>1_000_000<\/span>)<\/span> as<\/span> $n<\/span>)<\/span> {<\/span>\n    \/\/ Process $n\u2026<\/span>\n}<\/span>\n<\/code><\/pre>\n
\n
\n    \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0627\u06af\u0631 \u0627\u0628\u062a\u062f\u0627 \u0633\u0639\u06cc \u06a9\u0631\u062f\u06cc\u062f \u0645\u062c\u0645\u0648\u0639\u0647 \u0627\u06cc \u0627\u0632 \u06cc\u06a9 \u0645\u06cc\u0644\u06cc\u0648\u0646 \u0634\u0645\u0627\u0631\u0647 \u0631\u0627 \u0628\u0633\u0627\u0632\u06cc\u062f \u060c PHP \u0627\u0632 \u062d\u0627\u0641\u0638\u0647 \u0632\u06cc\u0627\u062f\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u062f. \u0628\u0627 \u06cc\u06a9 \u0698\u0646\u0631\u0627\u062a\u0648\u0631 \u06a9\u0648\u0686\u06a9 \u0645\u06cc \u0645\u0627\u0646\u062f.<\/p>\n
\u0645\u062b\u0627\u0644: \u062e\u0648\u0627\u0646\u062f\u0646 \u06cc\u06a9 \u0641\u0627\u06cc\u0644 \u0628\u0632\u0631\u06af CSV<\/strong><\/p>\n
\n
function<\/span> readCsvLineByLine<\/span>(<\/span>string<\/span> $filename<\/span>):<\/span> Generator<\/span> {<\/span>\n    if<\/span> (<\/span>!<\/span>is_readable<\/span>(<\/span>$filename<\/span>))<\/span> {<\/span>\n        throw<\/span> new<\/span> InvalidArgumentException<\/span>(<\/span>\"Cannot read: <\/span>$filename<\/span>\"<\/span>);<\/span>\n    }<\/span>\n    $handle<\/span> =<\/span> fopen<\/span>(<\/span>$filename<\/span>,<\/span> 'r'<\/span>);<\/span>\n    if<\/span> (<\/span>!<\/span>$handle<\/span>)<\/span> {<\/span>\n        throw<\/span> new<\/span> RuntimeException<\/span>(<\/span>\"Failed to open: <\/span>$filename<\/span>\"<\/span>);<\/span>\n    }<\/span>\n\n    \/\/ First row is the header:<\/span>\n    $header<\/span> =<\/span> fgetcsv<\/span>(<\/span>$handle<\/span>);<\/span>\n    while<\/span> ((<\/span>$row<\/span> =<\/span> fgetcsv<\/span>(<\/span>$handle<\/span>))<\/span> !==<\/span> false<\/span>)<\/span> {<\/span>\n        yield<\/span> array_combine<\/span>(<\/span>$header<\/span>,<\/span> $row<\/span>);<\/span>\n    }<\/span>\n    fclose<\/span>(<\/span>$handle<\/span>);<\/span>\n}<\/span>\n\n\/\/ Use it like this:<\/span>\nforeach<\/span> (<\/span>readCsvLineByLine<\/span>(<\/span>__DIR__<\/span> .<\/span> '\/large-data.csv'<\/span>)<\/span> as<\/span> $record<\/span>)<\/span> {<\/span>\n    \/\/ Each $record is an associative array, e.g. ['id'=>'123', 'name'=>'Alice', \u2026]<\/span>\n    \/\/ Process $record without loading the entire file into memory.<\/span>\n}<\/span>\n<\/code><\/pre>\n
\n
\n    \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0686\u0648\u0646 fgetcsv()<\/code> \u06cc\u06a9 \u062e\u0637 \u0631\u0627 \u062f\u0631 \u06cc\u06a9 \u0632\u0645\u0627\u0646 \u0645\u06cc \u062e\u0648\u0627\u0646\u062f \u0648 yield<\/code> \u06cc\u06a9 \u0631\u062f\u06cc\u0641 \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f \u060c PHP \u0647\u0631\u06af\u0632 \u06a9\u0644 \u067e\u0631\u0648\u0646\u062f\u0647 \u0631\u0627 \u0628\u0647 \u0637\u0648\u0631 \u0647\u0645\u0632\u0645\u0627\u0646 \u0628\u0627\u0631 \u0646\u0645\u06cc \u06a9\u0646\u062f.<\/p>\n
\u0686\u0647 \u0632\u0645\u0627\u0646\u06cc \u0627\u0632 \u0698\u0646\u0631\u0627\u062a\u0648\u0631\u0647\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u0645<\/strong><\/p>\n
    \n
  • \u0648\u0627\u06a9\u0634\u06cc \u0647\u0632\u0627\u0631\u0627\u0646 \u0631\u062f\u06cc\u0641 \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647: yield<\/code> \u0647\u0631 \u0631\u062f\u06cc\u0641 \u0628\u0647 \u062c\u0627\u06cc fetchAll()<\/code>\u0628\u0634\u0631<\/li>\n
  • \u067e\u0631\u062f\u0627\u0632\u0634 \u067e\u0631\u0648\u0646\u062f\u0647 \u0647\u0627\u06cc \u0628\u0632\u0631\u06af \u0648\u0631\u0648\u062f \u0628\u0647 \u0633\u06cc\u0633\u062a\u0645 \u06cc\u0627 \u062e\u0637 \u067e\u0631\u0648\u0646\u062f\u0647 \u0647\u0627\u06cc \u0645\u062a\u0646\u06cc \u0628\u0647 \u0635\u0648\u0631\u062a \u062e\u0637.<\/li>\n
  • \u0647\u0631 \u0634\u0631\u0627\u06cc\u0637\u06cc \u06a9\u0647 \u062f\u0631 \u063a\u06cc\u0631 \u0627\u06cc\u0646 \u0635\u0648\u0631\u062a \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u0639\u0638\u06cc\u0645 \u0628\u0633\u0627\u0632\u06cc\u062f.<\/li>\n<\/ul>\n
    \u0698\u0646\u0631\u0627\u062a\u0648\u0631\u0647\u0627 \u0628\u0627\u0639\u062b \u0645\u06cc \u0634\u0648\u0646\u062f \u06a9\u062f PHP \u0634\u0645\u0627 \u0631\u0627 “\u062a\u0646\u0628\u0644” \u0627\u062c\u0631\u0627 \u06a9\u0646\u062f: \u0645\u0642\u0627\u062f\u06cc\u0631 \u0628\u0631 \u0627\u0633\u0627\u0633 \u062a\u0642\u0627\u0636\u0627 \u062a\u0648\u0644\u06cc\u062f \u0645\u06cc \u0634\u0648\u0646\u062f. \u0627\u06cc\u0646 \u0628\u0627\u0639\u062b \u0645\u06cc \u0634\u0648\u062f \u0645\u0635\u0631\u0641 \u062d\u0627\u0641\u0638\u0647 \u06a9\u0645 \u0628\u0627\u0634\u062f \u0648 \u0627\u0632 \u06a9\u0646\u062f\u06cc \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0645\u06cc \u06a9\u0646\u062f. \u062f\u0641\u0639\u0647 \u0628\u0639\u062f \u06a9\u0647 \u0628\u0627\u06cc\u062f \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u0628\u0632\u0631\u06af \u0631\u0627 \u062f\u0631 PHP \u0627\u0646\u062c\u0627\u0645 \u062f\u0647\u06cc\u062f \u060c \u06cc\u06a9 \u0639\u0645\u0644\u06a9\u0631\u062f \u0698\u0646\u0631\u0627\u062a\u0648\u0631 \u0631\u0627 \u0627\u0645\u062a\u062d\u0627\u0646 \u06a9\u0646\u06cc\u062f!<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"
    PHP \u0645\u062f\u0631\u0646 \u0634\u0627\u0645\u0644 \u0645\u06cc \u0634\u0648\u062f \u0698\u0646\u0631\u0627\u062a\u0648\u0631\u060c \u06a9\u0647 \u0628\u0647 \u0634\u0645\u0627 \u0627\u0645\u06a9\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u0628\u062f\u0648\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062d\u0627\u0641\u0638\u0647 \u0632\u06cc\u0627\u062f \u0628\u0627 \u0645\u062c\u0645\u0648\u0639\u0647 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u0628\u0632\u0631\u06af \u06a9\u0627\u0631 \u06a9\u0646\u06cc\u062f. \u0628\u0647 \u062c\u0627\u06cc \u0633\u0627\u062e\u062a\u0646 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u0639\u0638\u06cc\u0645 \u0648 \u0633\u067e\u0633 \u062d\u0644\u0642\u0647 \u0632\u062f\u0646 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0622\u0646 \u060c \u06cc\u06a9 \u0698\u0646\u0631\u0627\u062a\u0648\u0631 \u0627\u0632 \u0622\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u062f yield \u0628\u0631\u0627\u06cc \u0628\u0627\u0632\u06af\u0634\u062a \u06cc\u06a9 \u0645\u0648\u0631\u062f \u0647\u0645\u0632\u0645\u0627\u0646. \u0627\u06cc\u0646 \u0641\u0642\u0637 \u0645\u0642\u062f\u0627\u0631 \u0641\u0639\u0644\u06cc …<\/p>\n","protected":false},"author":2,"featured_media":111578,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[339],"tags":[],"class_list":["post-111577","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dev"],"_links":{"self":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/111577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/comments?post=111577"}],"version-history":[{"count":0,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/111577\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media\/111578"}],"wp:attachment":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media?parent=111577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/categories?post=111577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/tags?post=111577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}