Newsgroups: php.internals Path: news.php.net Xref: news.php.net php.internals:118596 Return-Path: Delivered-To: mailing list internals@lists.php.net Received: (qmail 64809 invoked from network); 10 Sep 2022 12:19:57 -0000 Received: from unknown (HELO php-smtp4.php.net) (45.112.84.5) by pb1.pair.com with SMTP; 10 Sep 2022 12:19:57 -0000 Received: from php-smtp4.php.net (localhost [127.0.0.1]) by php-smtp4.php.net (Postfix) with ESMTP id 5681B1804C4 for ; Sat, 10 Sep 2022 05:19:56 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on php-smtp4.php.net X-Spam-Level: X-Spam-Status: No, score=0.6 required=5.0 tests=BAYES_50,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,HTML_MESSAGE, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.2 X-Spam-ASN: AS15169 209.85.128.0/17 X-Spam-Virus: No X-Envelope-From: Received: from mail-yw1-f174.google.com (mail-yw1-f174.google.com [209.85.128.174]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by php-smtp4.php.net (Postfix) with ESMTPS for ; Sat, 10 Sep 2022 05:19:55 -0700 (PDT) Received: by mail-yw1-f174.google.com with SMTP id 00721157ae682-3487d84e477so47972947b3.6 for ; Sat, 10 Sep 2022 05:19:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date; bh=713TUuXMkr13IHJITTbLvFwBgwRBQMmUeYhI4KepP5A=; b=l4Z38SjsYEAj5lXEt3DJ6KEmgPMyd17jB9Dq4VJrqe6RYUsJ4igbZG3p7hjTeSPD2g rCu9maRUIH+sunwXsBc+YDFI/ZbWZTu+tJb/OBHWN0bDHc7yK/bCGi/8Z8Xn6FEuRcbi 33WTyWCmCJajJxdTebe/KabCflOLtRWduaPiFdc4SIynWTiJGvCLn1eE/7o7suGSfyZM lNYGdu/4HlcJ9RVrOWBtRlVmADMXJJdMUr340RzFbY+4gCcRn18sjKXXIJmueYRx/WVS x6Hc+8VuQEb5QeW/6gr5VtpBEKb02X54fARPLK92Gy7DQlO+1VyVTibmIsnl5TrhgTtO T12w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date; bh=713TUuXMkr13IHJITTbLvFwBgwRBQMmUeYhI4KepP5A=; b=zXg+zoBpQmdqtfMuDQNJr6pl61nDAS/K/GMmFXrworplONZf9wzg5kA4vRW+eH8+uc VyYWKdX0+Z4+iLbPIymMLZ3oRajZw+3YPBstdh1FW3I8cOWXP4HVIDtFvk7nkkrBasik F+U6cRslaQvig+bChVV1f3C3dkjLIOPIwFXnSt5O5hd6xKruNapfSt07boKRMkkUooeF YzDZZbXSwIntfRquKyHlxWpVWhl/HGbXQxn/6RNmJgX+Evn7IOwlA7Sew3T7m8/HkYmY 4RrqfgtZMKyAho+7y2qSxh5l4qsYUp2ChrXV1XrmEkCh7r7epGO97sfI8EnzaQP2DxYd GW6Q== X-Gm-Message-State: ACgBeo3Tq7XQlb5NGJ6Lynvyz4FJl6k5XB0BEbQMpxDejIC+h7kYmMoK pEtUYlYsw39iq0Aws0iJ6+PYKBAB9pYkUMn29P/43NK5Depztw== X-Google-Smtp-Source: AA6agR7B0+YJtrZ0Cd2ue5ecKTEooaOGI+tpS3KU9DeU2kJiTT35vxeCE5y3Dz/rbBILjUXigkXFHjqIkQpE02ClPmo= X-Received: by 2002:a81:d97:0:b0:348:f982:e2f7 with SMTP id 145-20020a810d97000000b00348f982e2f7mr2318886ywn.414.1662812395028; Sat, 10 Sep 2022 05:19:55 -0700 (PDT) MIME-Version: 1.0 Date: Sat, 10 Sep 2022 15:19:44 +0300 Message-ID: To: PHP Internals Content-Type: multipart/alternative; boundary="0000000000002244aa05e851ae68" Subject: str_repeat performance From: zsidelnik@gmail.com (Eugene Sidelnyk) --0000000000002244aa05e851ae68 Content-Type: text/plain; charset="UTF-8" Hello internals! I have noted some strange points about `str_repeat` performance. It looks like the lesser `$times` argument is, the bigger is execution time (only if we consider big numbers). For example, `str_repeat('%d ', 12500);` is a lot slower than `str_repeat('%d ', 1250000)`. First case (slow one): https://3v4l.org/ZAoGi Second case (fast one): https://3v4l.org/YIdQM Best regards, Yevhen --0000000000002244aa05e851ae68--