function - How to specify number of digits in a float number in php? -


संख्या है: 1234.56789 या शायद '-1234.56789'

क्या ।

कुछ ऐसा है: 

  intNumber (१,२३४.५६७८९); // 4 नाव संख्या (1234.5678 9); // 5

संपादित करें: वास्तव में मैं यह देखना चाहता हूं कि यह संख्या 4 अंक से पहले (।) और 5 अंकों के बाद (।) है। यदि हां, तो मैं इसे डेटाबेस में सहेजता हूं, और यदि नहीं, तो मैं उसे डेटाबेस में नहीं बचाता।

पीएचपी में सटीक नामक एक अतिरिक्त पैरामीटर के साथ प्रयोग करें। 

  & lt;? Php echo round (1234.56789,4); // "प्रिंट" 1234.5679 // ^ --- सटीक पराम

संपादित करें:

< P> बहुत बहुत धन्यवाद दरअसल, मैं यह देखना चाहता हूं कि इस नंबर के पास (।) और 5 अंक के बाद (।) के बाद 4 अंक हैं। यदि हां, तो मैं इसे डेटाबेस में सहेजता हूं, और यदि नहीं, तो मैं इसे डेटाबेस में नहीं सहेजता हूं।

यह एक थोड़ी हैक हालांकि है .. 

 < कोड> & lt;? Php फ़ंक्शन नंबर जांचें ($ फ्लोट) {$ arr = विस्फोट ('।', $ फ्लोट); यदि (स्ट्रेलन (ट्रिम ($ arr [0], '-')) == 4 & amp; strlen ($ arr [1]) == 5) {वापसी 1; } और {वापसी 0; }} यदि (संख्या की जाँच करें (1234.56789)) {गूंजती "आप इस संख्या को सम्मिलित कर सकते हैं!"; } Else {इको "सही प्रारूप में नहीं है!"; }

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