optimization - passing a string by reference to a function would speed things up? (php) -

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संभव डुप्लिकेट:

मुझे आश्चर्य है कि संदर्भ से पैरामीटर पास घोषित करके, PHP इंटरप्रिटर को कार्य के स्थानीय क्षेत्र में स्ट्रिंग की प्रतिलिपि बनाने के लिए तेज़ हो जाएगा? 

  function escapeCSV (& $ string) {$ string}  
 = Str_replace ('' ',' '' ', $ string); // प्रत्येक "से" बचें अगर (स्ट्रॉप्स ($ स्ट्रिंग,', ')! == गलत) $ string =' ''। $ String ' "'; // यदि एक क्षेत्र में अल्पविराम है, तो उसे गोलाकार उद्धरण चिह्नों के साथ संलग्न करें $ स्ट्रिंग लौटें; }

इस से तेज़ होना: 

  फ़ंक्शन एसेक सीएससी ($ स्ट्रिंग) {$ string = str_replace ('' ',' '' ', $ स्ट्रिंग ); // बचें हर "से" "अगर (स्ट्रॉप्स ($ स्ट्रिंग, ',')! == गलत) $ string = '' '। $ String।' ';'; '; // यदि एक क्षेत्र में अल्पविराम है, तो उसे गोलाकार उद्धरण चिह्नों के साथ संलग्न करें $ स्ट्रिंग लौटें; }

?

नहीं सोचें, प्रोफ़ाइल ।

चलाने वाली स्क्रिप्ट जो 100,000 पुनरावृत्तियों के तहत कार्य के प्रत्येक संस्करण का उपयोग करते हैं, कहते हैं, यूनिक्स समय कमांड क्या तेजी से है के बारे में मत लो; पता करें।


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