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How to compile php7 installation directory

The method to compile the php7 installation directory is: 1. Download the source code of PHP7 and extract it to a local directory; 2. Install the required dependency packages to ensure that PHP7 can run normally; 3. Enter the PHP7 source code directory and configure the compilation of PHP7 Parameters; 4. Execute the command to compile and install PHP7.

Jun 05, 2023 am 09:26 AM

php7 php

How to compile and install Apache and PHP

The method to compile and install Apache and PHP is: 1. Download the required versions of Apache and PHP and decompress the source code files; 2. In the directory of the Apache and PHP source code, use the "./configure" command to configure Apache and run " make" and "make install" commands to compile and install Apache; 3. Open the Apache configuration file "httpd.conf" and add the configuration code; 4. Restart the Apache service.

Jun 02, 2023 pm 04:15 PM

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How to convert timestamp to date format in php

How to convert timestamp to date format in PHP: 1. Use the "date()" function, the syntax is "date("Y-m-d H:i:s", timestamp)"; 2. Use the DateTime class, the syntax is "new DateTime("@timestamp")"; 3. Use the "strftime()" function, the syntax is "strftime('%Y-%m-%d %H:%M:%S', timestamp)".

Jun 02, 2023 pm 03:48 PM

php

What is implicit conversion of types in php

PHP's implicit type conversion means that when a variable is assigned a value different from its own data type, PHP will automatically convert it to another data type.

Jun 02, 2023 pm 03:27 PM

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what is val in php

Val in PHP is generally not a built-in function or keyword in the language, so it has no clear meaning. It may be a variable, function name or class name defined by the programmer himself.

Jun 02, 2023 pm 03:06 PM

php

What is the difference between echo statement and vardump function in php

The difference between the echo statement and the vardump function in PHP is that echo is used to output one or more strings, while var_dump is used to output relevant information about the specified variable, such as type, value, length, etc.

Jun 02, 2023 pm 02:46 PM

php

What is define in php

Define in PHP is a function used to define constants. Constants refer to values that cannot be changed or redefined. Unlike variables, once a constant is defined, it cannot be modified or revoked. Its function syntax is "define(name, value, case_insensitive) )", it should be noted that constant names usually follow certain specifications, such as using all uppercase letters, using underscores _ to separate words, etc.

Jun 02, 2023 pm 02:02 PM

php

What are the differences between php and c#

The differences between php and c# are: 1. The language type system is different, PHP is dynamic, while C# is static type; 2. The platforms used are different, PHP can be cross-platform, while C# is exclusive to Windows; 3. The programming paradigm is different, PHP It supports object-oriented, procedural and functional programming, and C# is more inclined to object-oriented programming; 4. The execution speed is different, PHP is faster, and C# is relatively slow; 5. The application scenarios are different, PHP is used in web development, servers, etc. C# is used for Windows desktop and web applications.

Jun 02, 2023 pm 01:45 PM

php C/C++

What are the ways to prevent the fgets function from getting newline characters in PHP?

How to prevent the fgets function from getting the newline character in PHP: 1. Use the "rtrim" function to remove the newline character at the end of the line when reading the text line. The code is "rtrim(text content, "\n")"; 2. Use the "str_replace" function to replace the newline character, the code is "str_replace("\n", "", text content)".

Jun 02, 2023 pm 01:24 PM

php

What are the five ways to connect php to sqlserver?

The five ways to connect SQL Server with PHP are as follows: 1. Use the "mssql_connect()" function; 2. Use the "sqlsrv_connect()" function; 3. Use the PDO class connection; 4. Use the "odbc_connect()" function; 5. Use COM Object connection.

Jun 02, 2023 am 11:59 AM

sqlserver php

How to convert xml+ to php+ array

Method to convert xml+ to php+ array: 1. Use the syntax "simplexml_load_string()" to convert the xml string into a SimpleXmlElement object; 2. Use the syntax "json_decode()" to convert the SimpleXmlElement object into a PHP array; 3. Use the syntax "foreach" ()" loop to access the item element; 4. Use the syntax "getDocNamespaces()" to process the xml string namespace.

Jun 02, 2023 am 11:54 AM

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How to round the value after division in php

How to implement rounding of values after division in PHP: 1. Create a PHP sample file; 2. Create two variables, namely "$myval" and "$const"; 3. "round()" function to set the value after division Value, the syntax is "$result = round($myval / $const, 2, PHP_ROUND_HALF_UP);"; 4. This can be achieved by outputting the "$result" assignment result through echo.

Jun 02, 2023 am 11:37 AM

php

What are the methods for merging two arrays in PHP?

How to merge two arrays in PHP: 1. Create a PHP sample file, define two variables as "$a" and "$b", and use the "+" operator to realize the values of the two arrays through the "$a+$b" formula Merge into one array; 2. Use the "array_merge($a,$b)" syntax to merge the two arrays; 3. Use the "array_merge_recursive($a,$b)" syntax to merge the arrays; 4. Use the "array_combine($ a,$b)" syntax to merge two arrays.

Jun 02, 2023 am 11:31 AM

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How to convert json string to csv format in php

How to convert json string to csv format in php: 1. Create a php sample file; 2. Convert the JSON string to a PHP array or object; 3. Create a file handle and open a CSV file for writing; 4. Write the header row and data row in the CSV file; 5. Write the data row into the CSV file and use comma separators between fields, close the file handle and complete the conversion.

Jun 02, 2023 am 11:13 AM

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